Toyota Camry TOP 14 Most Common Diagnostic Trouble Code
The top 14 Diagnostic Trouble Codes (DTCs) for Toyota Camry vehicles. Our blog post provides a brief overview of each DTC, as well as actionable insights to assist you in identifying and resolving these issues. Understanding the causes, symptoms, location of the fault, and possible fixes for each DTC allows you to take proactive measures to keep your Toyota Camry in great condition.
DTC 52
Description: This DTC indicates a malfunction in the knock sensor circuit.
Cause: The cause of this DTC can be a faulty knock sensor, damaged wiring or a damaged engine control module.
Symptoms: The symptoms of this DTC can include reduced engine power, engine knocking, and increased fuel consumption.
Location of Fault: The fault is located within the knock sensor circuit.
How to Fix: To fix this DTC, the knock sensor will need to be replaced and any damaged wiring will need to be repaired or replaced.
DTC P0012
Description: This DTC indicates a malfunction in the camshaft position sensor circuit.
Cause: The cause of this DTC can be a faulty camshaft position sensor, damaged wiring or a damaged engine control module.
Symptoms: The symptoms of this DTC can include reduced engine power, engine stalling, and the check engine light coming on.
Location of Fault: The fault is located within the camshaft position sensor circuit.
How to Fix: To fix this DTC, the camshaft position sensor will need to be replaced and any damaged wiring will need to be repaired or replaced.
DTC P1604
Description: This DTC indicates a malfunction in the startability circuit.
Cause: The cause of this DTC can be a faulty engine control module, damaged wiring or a malfunctioning startability relay.
Symptoms: The symptoms of this DTC can include difficulty starting the engine, engine stalling, and the check engine light coming on.
Location of Fault: The fault is located within the startability circuit.
How to Fix: To fix this DTC, the startability relay will need to be replaced and any damaged wiring will need to be repaired or replaced.
DTC P0102
Description: This DTC indicates a malfunction in the mass airflow sensor circuit.
Cause: The cause of this DTC can be a faulty mass airflow sensor, damaged wiring or a malfunctioning engine control module.
Symptoms: The symptoms of this DTC can include reduced engine power, engine stalling, and the check engine light coming on.
Location of Fault: The fault is located within the mass airflow sensor circuit.
How to Fix: To fix this DTC, the mass airflow sensor will need to be replaced and any damaged wiring will need to be repaired or replaced.
DTC P2238
Description: This DTC indicates a malfunction in the oxygen sensor circuit for bank 1, sensor 1.
Cause: The cause of this DTC can be a faulty oxygen sensor, damaged wiring or a malfunctioning engine control module.
Symptoms: The symptoms of this DTC can include reduced engine power, increased fuel consumption, and the check engine light coming on.
Location of Fault: The fault is located within the oxygen sensor circuit for bank 1, sensor 1.
How to Fix: To fix this DTC, the oxygen sensor will need to be replaced and any damaged wiring will need to be repaired or replaced.
DTC P0301
Description: This DTC indicates a misfire in cylinder 1.
Cause: The cause of this DTC can be a faulty spark plug, damaged ignition coil or a damaged engine control module.
Symptoms: The symptoms of this DTC can include engine shaking, reduced engine power, and the check engine light coming on.
Location of Fault: The fault is located within cylinder 1.
How to Fix: To fix this DTC, the spark plugfor cylinder 1 will need to be replaced, the ignition coil will need to be tested and replaced if faulty, and any damaged wiring will need to be repaired or replaced.
DTC P1135
Description: This DTC indicates a malfunction in the air/fuel ratio sensor circuit.
Cause: The cause of this DTC can be a faulty air/fuel ratio sensor, damaged wiring or a malfunctioning engine control module.
Symptoms: The symptoms of this DTC can include reduced engine power, increased fuel consumption, and the check engine light coming on.
Location of Fault: The fault is located within the air/fuel ratio sensor circuit.
How to Fix: To fix this DTC, the air/fuel ratio sensor will need to be replaced and any damaged wiring will need to be repaired or replaced.
DTC P0351
Description: This DTC indicates a malfunction in the ignition coil A primary/secondary circuit.
Cause: The cause of this DTC can be a faulty ignition coil, damaged wiring or a malfunctioning engine control module.
Symptoms: The symptoms of this DTC can include engine misfiring, engine shaking, and the check engine light coming on.
Location of Fault: The fault is located within the ignition coil A primary/secondary circuit.
How to Fix: To fix this DTC, the ignition coil will need to be replaced and any damaged wiring will need to be repaired or replaced.
DTC B1421
Description: This DTC indicates a malfunction in the cold start injector circuit.
Cause: The cause of this DTC can be a faulty cold start injector, damaged wiring or a malfunctioning engine control module.
Symptoms: The symptoms of this DTC can include difficulty starting the engine, engine stalling, and the check engine light coming on.
Location of Fault: The fault is located within the cold start injector circuit.
How to Fix: To fix this DTC, the cold start injector will need to be replaced and any damaged wiring will need to be repaired or replaced.
DTC B126A
Description: This DTC indicates a malfunction in the steering angle sensor circuit.
Cause: The cause of this DTC can be a faulty steering angle sensor, damaged wiring or a malfunctioning engine control module.
Symptoms: The symptoms of this DTC can include the traction control system light coming on, reduced steering control, and the check engine light coming on.
Location of Fault: The fault is located within the steering angle sensor circuit.
How to Fix: To fix this DTC, the steering angle sensor will need to be replaced and any damaged wiring will need to be repaired or replaced.
DTC C1201
Description: This DTC indicates a malfunction in the engine control system.
Cause: The cause of this DTC can be a faulty engine control module, damaged wiring or a malfunctioning brake actuator.
Symptoms: The symptoms of this DTC can include the traction control system light coming on, reduced engine power, and the check engine light coming on.
Location of Fault: The fault is located within the engine control system.
How to Fix: To fix this DTC, the engine control module will need to be tested and replaced if faulty, and any damaged wiring will need to be repaired or replaced.
DTC P0171
Description: This DTC indicates a malfunction in the system too-lean (Bank 1) circuit.
Cause: The cause of this DTC can be a faulty oxygen sensor, damaged wiring, or a vacuum leak.
Symptoms: The symptoms of this DTC can include reduced engine power, increased fuel consumption, and the check engine light coming on.
Location of Fault: The fault is located within the system too lean (Bank 1) circuit.
How to Fix: To fix this DTC, the oxygen sensor will need to be tested and replaced if faulty, any damaged wiring will need to be repaired or replaced, and any vacuum leaks will need to be identified and repaired.
DTC U0073
Description: This DTC indicates a communication fault between the engine control module and the transmission control module.
Cause: The cause of this DTC can be a faulty engine control module, faulty transmission control module, damaged wiring, or a poor connection.
Symptoms: The symptoms of this DTC can include transmission shifting issues, reduced engine power, and the check engine light coming on.
Location of Fault: The fault is located within the communication between the engine control module and the transmission control module.
How to Fix: To fix this DTC, the engine control module and transmission control module will need to be tested and replaced if faulty, any damaged wiring will need to be repaired or replaced, and any poor connections will need to be identified and repaired.
DTC 3
Description: This DTC indicates a malfunction in the crankshaft position sensor circuit.
Cause: The cause of this DTC can be a faulty crankshaft position sensor, damaged wiring, or a malfunctioning engine control module.
Symptoms: The symptoms of this DTC can include difficulty starting the engine, engine stalling, and the check engine light coming on.
Location of Fault: The fault is located within the crankshaft position sensor circuit.
How to Fix: To fix this DTC, the crankshaft position sensor will need to be tested and replaced if faulty, any damaged wiring will need to be repaired or replaced, and the engine control module will need to be tested and replaced if faulty.
WORDS FROM ERWIN SALARDA
Routine maintenance is essential to keep your Toyota Camry in top shape. By staying aware of the most common DTCs and addressing them promptly, you can avoid costly repairs and prolong the life of your vehicle. Remember to regularly check your car’s systems and consult a professional if you notice any unusual symptoms or warning lights.