Kia OBD1 Trouble Codes
The following trouble codes are specific to Kia. You may also see Hyundai trouble codes, since Kia and Hyundai are of the same parent company.
Kia Trouble Codes Access
Without OBD Scan Tool
When trouble occurs in the main input or output devices, check for the cause using the data link connector (DLC) and the malfunction indicator lamp located in the instrument cluster. Failures of each input and output device are indicated and retrieved from the engine control module (ECM) as diagnostic trouble codes. To access the trouble codes, proceed as follows:
- Locate the DLC at top center of firewall and use jumper wire to connect ENG. Test and ground terminals.
- On 1995 Sportage models, turn ignition to on, but do not start engine.
- On other models, start and warm engine, then run at 2,000 RPM for 3 minutes.
- Diagnostic trouble codes will be displayed as a series of long and short flashes on the malfunction indicator lamp (MIL).
The ECM indicates stored trouble code by flashing the malfunction indicator/check engine light. Trouble codes 1 through 9 are indicated by individual short blinks and trouble codes 10 and above are indicated by long and short blinks. The trouble codes can be determined by adding long and short blinks.
Kia Trouble Codes Clearance
All trouble codes must be cleared from the ECU’s memory after repairing the faults. Otherwise, code(s) would remain in the ECU’s memory indefinitely and would appear along with a new code in the event of a future problem. To clear the trouble codes, proceed as follows:
- Turn the ignition key to position off.
- Disconnect the battery negative terminal for at least 20 seconds and the ECU (ECM) memory will be erased.
- Reconnect the battery negative terminal and check the codes to confirm the repair.
Warning: Disconnecting the battery may erase memory from electronic units, e.g., clock, radio.
Kia Generic Trouble Codes
- Click the table header to sort the table data by the respective column heading.
- Type keyword(s) in the table’s search box for a quick display of the searched data.
| Code(s) | Description | 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 |
| 10 | Intake Air Temperature Sensor | |
| 12 | Throttle position (TP) sensor – circuit malfunction | Wiring, TP sensor, ECM |
| 14 | Atmospheric Pressure Sensor | |
| 15 | Heated oxygen sensor (HO2S) – no signal | Wiring, HO2S, ECM |
| 16 | EGR Valve Position Sensor | |
| 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 |
| 25 | Pressure Regulator Control Solenoid Valve | |
| 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 |
| 41 | Variable Inertia Charging System Solenoid Valve | |
| 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 |