How to Read Kia OBD 1 Codes
This tutorial will work for the Kia Car Model: Optima-2001-2006 ,Sephia-1994-2006,Spectra-2001-2006 ,Sedona-2002-2006,Rio-2001-2006 ,Sportage-1996-2006 ,Mentor-1995-1997,Sportage-1995-1997.
Accessing trouble codes
- Ensure ignition switched OFF.
- Connect LED test lamp between terminals B and P Fig. 1 .
- Bridge data link connector (DLC) terminals Q and S Fig. 1 .
- Switch ignition ON.
- Check that LED illuminates for 3 seconds.
- If LED extinguishes: No faults are stored in memory.
- Count MIL flashes. Note trouble codes. Compare with trouble code table.
- Additional trouble codes will be flashed in sequence, commencing with the lowest trouble code number.
- Trouble codes consist of one or two digits. For example: Oxygen sensor (O2S). Trouble code displayed: 15 Fig. 2.
- A long pause separates each trouble code.
- The ECM fault memory can also be checked using suitable diagnostic equipment connected to the data link connector (DLC).
Erasing trouble codes
- Switch ignition OFF.
- Disconnect battery earth lead.
WARNING: Disconnecting the battery may erase memory from electronic units (e.g. radio).
- Depress brake pedal for 2 seconds.
- Reconnect battery earth lead.
List of Kia OBD Codes
| Trouble code | Fault location | Probable cause |
| 02 | Crankshaft position (CKP) – signal malfunction | Wiring, CKP sensor, ECM |
| 03 | Camshaft position (CMP) sensor – signal malfunction | Wiring, CMP sensor, ECM |
| 07 | Crankshaft position (CKP) sensor – signal malfunction | Air gap, reluctor |
| 08 | Mass air flow (MAF) sensor – circuit malfunction | Wiring, MAF sensor, ECM |
| 09 | Engine coolant temperature (ECT) sensor – circuit malfunction | Wiring, ECT sensor, ECM |
| 12 | Throttle position (TP) sensor – circuit malfunction | Wiring, TP sensor, ECM |
| 15 | Heated oxygen sensor (HO2S) – no signal | Wiring, HO2S, ECM |
| 17 | Heated oxygen sensor (HO2S) – incorrect signal | Fuel/intake system, wiring, HO2S, injector, ECM |
| 18 | Injector 1 – circuit malfunction | Wiring, injector, ECM |
| 19 | Injector 2 – circuit malfunction | Wiring, injector, ECM |
| 20 | Injector 3 – circuit malfunction | Wiring, injector, ECM |
| 21 | Injector 4 – circuit malfunction | Wiring, injector, ECM |
| 24 | Fuel pump relay – circuit malfunction | Wiring, fuel pump relay, ECM |
| 26 | Evaporative emission (EVAP) canister purge valve – circuit malfunction | Wiring, EVAP valve, ECM |
| 28 | Exhaust gas recirculation (EGR) solenoid – circuit malfunction | Wiring, EGR solenoid, ECM |
| 34 | Idle air control (IAC) valve – circuit malfunction | Wiring, IAC valve, ECM |
| 35 | Injector – malfunction | Wiring, injector |
| 36 | Mass air flow (MAF) sensor | Wiring, MAF sensor, fuel/intake system, ECM |
| 37 | Air leak | Intake system |
| 46 | AC compressor relay – circuit malfunction | Wiring, AC compressor relay, ECM |
| 48 | Engine control module (ECM), output circuit – malfunction | Wiring, injector(s), EVAP valve, EGR solenoid, power stage in ECM |
| 49 | Engine control module (ECM), output circuit – malfunction | Wiring, ISC actuator, power stage in ECM |
| 56 | Idle air control (IAC) valve – circuit malfunction | Wiring, IAC valve, ECM |
| 57 | AC compressor signal – circuit malfunction | Wiring, AC pressure switch, AC thermo switch, AC relay, ECM |
| 73 | Vehicle speed sensor (VSS) – circuit malfunction | Wiring, VSS, ECM |
| 87 | Malfunction indicator lamp (MIL) – circuit malfunction | Wiring, MIL, ECM |
| 88 | Engine control module (ECM) – internal memory failure | Wiring, ECM |
| 99 | Engine control module (ECM), supply voltage – malfunction | Wiring, battery, ECM |
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