Toyota C-HR TOP 8 OBD DTC Issues

Toyota C-HR TOP 8 OBD DTC Issues

The Toyota C-HR is a popular compact crossover SUV known for its stylish design and impressive performance. However, like all vehicles, it is not immune to any issues. In this blog, we will discuss the top 8 most common On-Board Diagnostic (OBD) Diagnostic Trouble Codes (DTC) that owners of the Toyota C-HR may encounter, including C1201, C1224, C1225, C1226, P148F00, P010515, P0420, and C1AA9. Understanding these codes and their causes can help you diagnose and fix potential problems with your vehicle, and ensure that it runs smoothly.<>

Toyota C-HR DTC C1201

Description:

DTC C1201 stands for “Engine Control System Malfunction.” This code indicates that the Engine Control Module (ECM) has detected a problem within the engine control system.<>

Symptoms:

The following are the common symptoms of a C1201 code:
– Engine warning light illuminated on the dashboard
– Engine misfires
– Engine performance issues such as a decrease in power or acceleration
– Engine stalling
– Engine will not start<>

Cause:

The following are the possible causes of a C1201 code:
– Faulty Engine Control Module (ECM)
– Wiring issues or connections in the engine control system
– Failed sensors such as the crankshaft position sensor or the camshaft position sensor
– Failed fuel injectors
– Failed spark plugs or ignition coils
– Engine mechanical failure<>

Possible Location:

The Engine Control Module (ECM) is located in the engine bay of the vehicle.<>

How to Fix the Problem:

To fix the problem, a diagnosis will need to be performed to determine the root cause of the C1201 code. The following steps can be taken to diagnose the problem:
– Check for any stored codes in the Engine Control Module (ECM)
– Inspect the wiring and connections in the engine control system
– Test the sensors such as the crankshaft position sensor and the camshaft position sensor
– Test the fuel injectors
– Test the spark plugs and ignition coils
– Check for any engine mechanical issues<>

How Difficult to Fix:

The difficulty of fixing the problem depends on the root cause of the C1201 code. Some issues such as a faulty sensor or spark plug can be relatively easy to fix, while others such as a failed Engine Control Module (ECM) or engine mechanical failure can be more complex and time-consuming.<>

Can You Drive With This Code:

It is not recommended to drive a vehicle with a C1201 code as it can cause further damage to the engine and potentially lead to a breakdown.<>

How to Clear the Code:

The code can be cleared by using an OBD-II scanner to erase the stored codes in the Engine Control Module (ECM). Disconnecting the battery will reset the ECU, but it will not erase the stored codes in the Engine Control Module (ECM).<>

Tools Needed:

The following tools may be needed to diagnose and fix the problem:
– OBD-II scanner
– Digital multimeter
– Fuel pressure gauge
– Spark plug socket
– Ignition coil tester
– Wiring diagram for the engine control system
The purpose of these tools is to diagnose and fix the problem causing the C1201 code. The OBD-II scanner is used to retrieve stored codes and diagnose the problem, while the digital multimeter and fuel pressure gauge are used to test the sensors and fuel injectors. The spark plug socket and ignition coil tester are used to test the spark plugs and ignition coils, and the wiring diagram for the engine control system is used to inspect the wiring and connections.<>


Toyota C-HR DTC C1224

Description:

DTC C1224 stands for “Brake Booster Pump Motor Circuit Short to Ground.” This code indicates that there is a problem with the brake booster pump motor circuit, causing it to short to ground.<>

Symptoms:

The following are the common symptoms of a C1224 code:
– Engine warning light illuminated on the dashboard
– Reduced braking power or increased braking effort required
– Brake warning light illuminated on the dashboard
– Engine stalling or misfiring<>

Cause:

The following are the possible causes of a C1224 code:
– Failed brake booster pump motor
– Wiring issues or connections in the brake booster pump motor circuit
– Failed relay or fuse for the brake booster pump motor
– Failed Engine Control Module (ECM)<>

Possible Location:

The brake booster pump motor is located in the engine bay of the vehicle.<>

How to Fix the Problem:

To fix the problem, a diagnosis will need to be performed to determine the root cause of the C1224 code. The following steps can be taken to diagnose the problem:
– Check for any stored codes in the Engine Control Module (ECM)
– Inspect the wiring and connections in the brake booster pump motor circuit
– Test the brake booster pump motor
– Test the relay or fuse for the brake booster pump motor
– Check for any engine mechanical issues<>

How Difficult to Fix:

The difficulty of fixing the problem depends on the root cause of the C1224 code. Some issues such as a faulty relay or fuse for the brake booster pump motor can be relatively easy to fix, while others such as a failed Engine Control Module (ECM) or brake booster pump motor can be more complex and time-consuming.<>

Can You Drive With This Code:

It is not recommended to drive a vehicle with a C1224 code as it can cause a decrease in braking power, making it difficult to stop the vehicle and potentially leading to a collision.<>

How to Clear the Code:

The code can be cleared by using an OBD-II scanner to erase the stored codes in the Engine Control Module (ECM). Disconnecting the battery will reset the ECU, but it will not erase the stored codes in the Engine Control Module (ECM).<>

Tools Needed:

The following tools may be needed to diagnose and fix the problem:
– OBD-II scanner
– Digital multimeter
– Brake pressure gauge
– Wiring diagram for the brake booster pump motor circuit
The purpose of these tools is to diagnose and fix the problem causing the C1224 code. The OBD-II scanner is used to retrieve stored codes and diagnose the problem, while the digital multimeter and brake pressure gauge are used to test the brake booster pump motor and its components. The wiring diagram for the brake booster pump motor circuit is used to inspect the wiring and connections.<>


Toyota C-HR DTC C1225

Description:

DTC C1225 stands for “Brake Booster Pump Motor Circuit Open.” This code indicates that there is a problem with the brake booster pump motor circuit, causing it to open.<>

Symptoms:

The following are the common symptoms of a C1225 code:
– Engine warning light illuminated on the dashboard
– Reduced braking power or increased braking effort required
– Brake warning light illuminated on the dashboard
– Engine stalling or misfiring<>

Cause:

The following are the possible causes of a C1225 code:
– Failed brake booster pump motor
– Wiring issues or connections in the brake booster pump motor circuit
– Failed relay or fuse for the brake booster pump motor
– Failed Engine Control Module (ECM)<>

Possible Location:

The brake booster pump motor is located in the engine bay of the vehicle.<>

How to Fix the Problem:

To fix the problem, a diagnosis will need to be performed to determine the root cause of the C1225 code. The following steps can be taken to diagnose the problem:
– Check for any stored codes in the Engine Control Module (ECM)
– Inspect the wiring and connections in the brake booster pump motor circuit
– Test the brake booster pump motor
– Test the relay or fuse for the brake booster pump motor
– Check for any engine mechanical issues<>

How Difficult to Fix:

The difficulty of fixing the problem depends on the root cause of the C1225 code. Some issues such as a faulty relay or fuse for the brake booster pump motor can be relatively easy to fix, while others such as a failed Engine Control Module (ECM) or brake booster pump motor can be more complex and time-consuming.<>

Can You Drive With This Code:

It is not recommended to drive a vehicle with a C1225 code as it can cause a decrease in braking power, making it difficult to stop the vehicle and potentially leading to a collision.<>

How to Clear the Code:

The code can be cleared by using an OBD-II scanner to erase the stored codes in the Engine Control Module (ECM). Disconnecting the battery will reset the ECU, but it will not erase the stored codes in the Engine Control Module (ECM).<>

Tools Needed:

The following tools may be needed to diagnose and fix the problem:
– OBD-II scanner
– Digital multimeter
– Brake pressure gauge
– Wiring diagram for the brake booster pump motor circuit
The purpose of these tools is to diagnose and fix the problem causing the C1225 code. The OBD-II scanner is used to retrieve stored codes and diagnose the problem, while the digital multimeter and brake pressure gauge are used to test the brake booster pump motor and its components. The wiring diagram for the brake booster pump motor circuit is used to inspect the wiring and connections.<>


Toyota C-HR DTC C1226

Description:

DTC C1226 stands for “Brake Booster Vacuum System Performance.” This code indicates that there is a problem with the brake booster vacuum system, affecting its performance.<>

Symptoms:

The following are the common symptoms of a C1226 code:
– Engine warning light illuminated on the dashboard
– Reduced braking power or increased braking effort required
– Brake warning light illuminated on the dashboard
– Engine stalling or misfiring<>

Cause:

The following are the possible causes of a C1226 code:
– Failed brake booster vacuum pump
– Vacuum leaks in the brake booster vacuum system
– Failed vacuum hose or vacuum actuator
– Failed Engine Control Module (ECM)<>

Possible Location:

The brake booster vacuum pump and vacuum actuator are located in the engine bay of the vehicle.<>

How to Fix the Problem:

To fix the problem, a diagnosis will need to be performed to determine the root cause of the C1226 code. The following steps can be taken to diagnose the problem:
– Check for any stored codes in the Engine Control Module (ECM)
– Inspect the vacuum hoses and connections in the brake booster vacuum system
– Test the brake booster vacuum pump
– Test the vacuum actuator
– Check for any vacuum leaks in the brake booster vacuum system
– Check for any engine mechanical issues<>

How Difficult to Fix:

The difficulty of fixing the problem depends on the root cause of the C1226 code. Some issues such as a vacuum leak or failed vacuum hose can be relatively easy to fix, while others such as a failed Engine Control Module (ECM) or brake booster vacuum pump can be more complex and time-consuming.<>

Can You Drive With This Code:

It is not recommended to drive a vehicle with a C1226 code as it can cause a decrease in braking power, making it difficult to stop the vehicle and potentially leading to a collision.<>

How to Clear the Code:

The code can be cleared by using an OBD-II scanner to erase the stored codes in the Engine Control Module (ECM). Disconnecting the battery will reset the ECU, but it will not erase the stored codes in the Engine Control Module (ECM).<>

Tools Needed:

The following tools may be needed to diagnose and fix the problem:
– OBD-II scanner
– Digital multimeter
– Vacuum gauge
– Wiring diagram for the brake booster vacuum system
The purpose of these tools is to diagnose and fix the problem causing the C1226 code. The OBD-II scanner is used to retrieve stored codes and diagnose the problem, while the digital multimeter and vacuum gauge are used to test the brake booster vacuum pump and its components. The wiring diagram for the brake booster vacuum system is used to inspect the vacuum hoses and connections.<>


Toyota C-HR DTC P148F00

Description:

DTC P148F00 stands for “Exhaust Gas Temperature Sensor Circuit Low Input Bank 1 Sensor 2.” This code indicates that the Engine Control Module (ECM) has detected a low signal input from the exhaust gas temperaturesensor in bank 1, sensor 2.<>

Symptoms:

The following are the common symptoms of a P148F00 code:
– Engine warning light illuminated on the dashboard
– Engine stalling or misfiring
– Reduced fuel efficiency
– Poor engine performance<>

Cause:

The following are the possible causes of a P148F00 code:
– Failed exhaust gas temperature sensor
– Wiring issues or connections in the exhaust gas temperature sensor circuit
– Failed Engine Control Module (ECM)
– Engine mechanical issues<>

Possible Location:

The exhaust gas temperature sensor is located in the exhaust system of the vehicle.<>

How to Fix the Problem:

To fix the problem, a diagnosis will need to be performed to determine the root cause of the P148F00 code. The following steps can be taken to diagnose the problem:
– Check for any stored codes in the Engine Control Module (ECM)
– Inspect the wiring and connections in the exhaust gas temperature sensor circuit
– Test the exhaust gas temperature sensor
– Check for any engine mechanical issues
– Check for any issues with the Engine Control Module (ECM)<>

How Difficult to Fix:

The difficulty of fixing the problem depends on the root cause of the P148F00 code. Some issues such as a failed exhaust gas temperature sensor or wiring issues can be relatively easy to fix, while others such as a failed Engine Control Module (ECM) or engine mechanical issues can be more complex and time-consuming.<>

Can You Drive With This Code:

It is possible to drive a vehicle with a P148F00 code, but it is not recommended as it can cause reduced fuel efficiency and poor engine performance, potentially leading to further damage to the vehicle.<>

How to Clear the Code:

The code can be cleared by using an OBD-II scanner to erase the stored codes in the Engine Control Module (ECM). Disconnecting the battery will reset the ECU, but it will not erase the stored codes in the Engine Control Module (ECM).<>

Tools Needed:

The following tools may be needed to diagnose and fix the problem:
– OBD-II scanner
– Digital multimeter
– Wiring diagram for the exhaust gas temperature sensor circuit
The purpose of these tools is to diagnose and fix the problem causing the P148F00 code. The OBD-II scanner is used to retrieve stored codes and diagnose the problem, while the digital multimeter is used to test the exhaust gas temperature sensor. The wiring diagram for the exhaust gas temperature sensor circuit is used to inspect the wiring and connections.<>


Toyota C-HR DTC P010515

Description:

DTC P010515 stands for “Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction.” This code indicates that the Engine Control Module (ECM) has detected an issue with the manifold absolute pressure/barometric pressure circuit.<>

Symptoms:

The following are the common symptoms of a P010515 code:
– Engine warning light illuminated on the dashboard
– Engine stalling or misfiring
– Reduced fuel efficiency
– Poor engine performance<>

Cause:

The following are the possible causes of a P010515 code:
– Failed manifold absolute pressure/barometric pressure sensor
– Wiring issues or connections in the manifold absolute pressure/barometric pressure sensor circuit
– Failed Engine Control Module (ECM)
– Engine mechanical issues<>

Possible Location:

The manifold absolute pressure/barometric pressure sensor is located in the engine bay of the vehicle.<>

How to Fix the Problem:

To fix the problem, a diagnosis will need to be performed to determine the root cause of the P010515 code. The following steps can be taken to diagnose the problem:
– Check for any stored codes in the Engine Control Module (ECM)
– Inspect the wiring and connections in the manifold absolute pressure/barometric pressure sensor circuit
– Test the manifold absolute pressure/barometric pressure sensor
– Check for any engine mechanical issues
– Check for any issues with the Engine Control Module (ECM)<>

How Difficult to Fix:

The difficulty of fixing the problem depends on the root cause of the P010515 code. Some issues such as a failed manifold absolute pressure/barometric pressure sensor or wiring issues can be relatively easy to fix, while others such as a failed Engine Control Module (ECM) or engine mechanical issues can be more complex and time-consuming.<>

Can You Drive With This Code:

It is possible to drive a vehicle with a P010515 code, but it is not recommended as it can cause reduced fuel efficiency and poor engine performance, potentially leading to further damage to the vehicle.<>

How to Clear the Code:

The code can be cleared by using an OBD-II scanner to erase the stored codes in the Engine Control Module (ECM). Disconnecting the battery will reset the ECU, but it will not erase the stored codes in the Engine Control Module (ECM).<>

Tools Needed:

The following tools may be needed to diagnose and fix the problem:
– OBD-II scanner
– Digital multimeter
– Wiring diagram for the manifold absolute pressure/barometric pressure sensor circuit
The purpose of these tools is to diagnose and fix the problem causing the P010515 code. The OBD-II scanner is used to retrieve stored codes and diagnose the problem, while the digital multimeter is used to test the manifold absolute pressure/barometric pressure sensor. The wiring diagram for the manifold absolute pressure/barometric pressure sensor circuit is used to inspect the wiring and connections.<>


Toyota C-HR DTC P0420

Description:

DTC P0420 stands for “Catalyst System Efficiency Below Threshold (Bank 1)”. This code indicates that the Engine Control Module (ECM) has detected a problem with the catalytic converter on bank 1, which is causing its efficiency to be below the acceptable threshold.<>

Symptoms:

The following are the common symptoms of a P0420 code:
– Engine warning light illuminated on the dashboard
– Reduced fuel efficiency
– Poor engine performance
– Increased emissions
– Engine stalling or misfiring<>

Cause:

The following are the possible causes of a P0420 code:
– Failed catalytic converter on bank 1
– Engine mechanical issues
– Wiring issues or connections in the catalytic converter circuit
– Failed Engine Control Module (ECM)<>

Possible Location:

The catalytic converter on bank 1 is located in the exhaust system of the vehicle.<>

How to Fix the Problem:

To fix the problem, a diagnosis will need to be performed to determine the root cause of the P0420 code. The following steps can be taken to diagnose the problem:
– Check for any stored codes in the Engine Control Module (ECM)
– Inspect the wiring and connections in the catalytic converter circuit
– Test the catalytic converter on bank 1
– Check for any engine mechanical issues
– Check for any issues with the Engine Control Module (ECM)<>

How Difficult to Fix:

The difficulty of fixing the problem depends on the root cause of the P0420 code. Some issues such as a failed catalytic converter or wiring issues can be relatively easy to fix, while others such as a failed Engine Control Module (ECM) or engine mechanical issues can be more complex and time-consuming.<>

Can You Drive With This Code:

It is possible to drive a vehicle with a P0420 code, but it is not recommended as it can cause increased emissions, reduced fuel efficiency, and poor engine performance, potentially leading to further damage to the vehicle.<>

How to Clear the Code:

The code can be cleared by using an OBD-II scanner to erase the stored codes in the Engine Control Module (ECM). Disconnecting the battery will reset the ECU, but it will not erase the stored codes in the Engine Control Module (ECM).<>

Tools Needed:

The following tools may be needed to diagnose and fix the problem:
– OBD-II scanner
– Digital multimeter
– Wiring diagram for the catalytic converter circuit
The purpose of these tools is to diagnose and fix the problem causing the P0420 code. The OBD-II scanner is used to retrieve stored codes and diagnose the problem, while the digital multimeter is used to test the catalytic converter on bank 1. The wiring diagram for the catalytic converter circuit is used to inspect the wiring and connections.<>


Toyota C-HR DTC C1AA9

Description:

DTC C1AA9 stands for “Motor Electronics Control Module Malfunction.” This code indicates that the Engine Control Module (ECM) has detected an issue with the motor electronics control module.<>

Symptoms:

The following are the common symptoms of a C1AA9 code:
– Engine warning light illuminated on the dashboard
– Engine stalling or misfiring
– Reduced fuelefficiency<>

Poor engine performance
Possible loss of power or acceleration<>

Cause:

The following are the possible causes of a C1AA9 code:
– Failed motor electronics control module
– Wiring issues or connections in the motor electronics control module circuit
– Failed Engine Control Module (ECM)
– Other electronic component failures<>

Possible Location:

The motor electronics control module is located in the engine bay of the vehicle.<>

How to Fix the Problem:

To fix the problem, a diagnosis will need to be performed to determine the root cause of the C1AA9 code. The following steps can be taken to diagnose the problem:
– Check for any stored codes in the Engine Control Module (ECM)
– Inspect the wiring and connections in the motor electronics control module circuit
– Test the motor electronics control module
– Check for any issues with other electronic components
– Check for any issues with the Engine Control Module (ECM)<>

How Difficult to Fix:

The difficulty of fixing the problem depends on the root cause of the C1AA9 code. Some issues such as a failed motor electronics control module or wiring issues can be relatively easy to fix, while others such as a failed Engine Control Module (ECM) or other electronic component failures can be more complex and time-consuming.<>

Can You Drive With This Code:

It is possible to drive a vehicle with a C1AA9 code, but it is not recommended as it can cause reduced fuel efficiency, poor engine performance, and possible loss of power or acceleration, potentially leading to further damage to the vehicle.<>

How to Clear the Code:

The code can be cleared by using an OBD-II scanner to erase the stored codes in the Engine Control Module (ECM). Disconnecting the battery will reset the ECU, but it will not erase the stored codes in the Engine Control Module (ECM).<>

Tools Needed:

The following tools may be needed to diagnose and fix the problem:
– OBD-II scanner
– Digital multimeter
– Wiring diagram for the motor electronics control module circuit
The purpose of these tools is to diagnose and fix the problem causing the C1AA9 code. The OBD-II scanner is used to retrieve stored codes and diagnose the problem, while the digital multimeter is used to test the motor electronics control module. The wiring diagram for the motor electronics control module circuit is used to inspect the wiring and connections.<>

WORD FROM ERWIN SALARDA<>

The top 8 OBD-II DTCs for the Toyota C-HR are C1201, C1224, C1225, C1226, P148F00, P010515, P0420, and C1AA9. By being aware of these issues, you can take proactive measures to keep your vehicle in top condition. Regular maintenance, such as regular oil changes, tire rotations, and brake checks, can help prevent these codes from appearing in the first place. If you do encounter any of these codes, don’t hesitate to take your vehicle to a trusted mechanic for diagnosis and repair.<>