ECU Fault Codes

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TLS ECU Fault codes

c00
c11
c12
c13
c14
c15
c21
c22
c23
c24
c25
c31
c32 or c34
c33 or c35
c41
c42
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MALFUNCTION CODE

DETECTED ITEM

DETECTED FAILURE CONDITION

CHECK FOR
c00 NO FAULT

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c11 Camshaft position sensor or circuit malfunction The signal does not reach to ECM for more than 2 sec. after receiving the starter signal.
The CMP sensor wiring and mechanical parts. (CMP sensor, rear intake cam pin, wiring/coupler connection)
c12 Crankshaft position sensor or circuit malfunction The signal does not reach to ECM for more than 2 sec. after receiving the starter signal.
The CKP sensor wiring and mechanical parts.(CKP sensor, wiring/coupler connection)
c13
Fixed to 760mmHg
Intake air pressure sensor malfunction The sensor produces following voltage. (0.5 V < or = sensor voltage < 4.5 V) Without the above range, c13 is indicated.
Intake air pressure sensor circuit Iow input Low pressure - high vacuum - Low voltage (or lAP sensor circuit shorted to ground)
Intake air pressure sensor circuit high input High pressure - Iow vacuum - high voltage (or lAP sensor circuit open)
lAP sensor, wiring/coupler connection.
c14
Fixed to wide open throttle and fixed timing
Throttle position sensor malfunction The sensor produces following voltage. (0.2 V < or = sensor voltage < 4.8 V) Without the above range, c14 is indicated.
Throttle position circuit Iow input Low voltage (or TP sensor circuit shorted to ground)
Throttle position circuit high input High voltage (or TP sensor circuit open)
TP sensor, wiring/coupler connection.
c15
Fixed to 80C (176F)
Engine coolant temp. sensor malfunction The sensor voltage should be the following. (0.15 V < or = sensor voltage < 4.85 V) Without the above range, c15 is indicated.
Engine coolant temp. circuit Iow input High temperature - Iow voltage (or ECT sensor circuit shorted to ground)
Engine coolant temp. circuit high input Low temperature - high voltage (or ECT sensor circuit open)
ECT sensor, wiring/coupler connection.
c21
Fixed to 40C (104F)
Intake air temp. sensor malfunction The sensor voltage should be the following. (0.15 V < or = sensor voltage < 4.85 V) Without the above range, c21 is indicated.
Intake air temp. circuit Iow input High temperature - Low voltage (or IAT sensor circuit shorted to ground)
Intake air temp. circuit high input Low temperature - high voltage (or IAT sensor circuit open)
IAT sensor, wiring/coupler connection.
c22
Fixed to 760mmHg
Atmospheric pressure sensor malfunction The sensor voltage should be the following. (0.5 V < or = sensor voltage < 4.85 V) Without the above range, c22 is indicated.
Atmospheric pressure sensor Iow/high input Atmospheric pressure is lower or higher than specification.
AP sensor, wiring/coupler connection.
c23 Tip over sensor or circuit malfunction The sensor voltage is less than the following for more than8 sec. after ignition switch turns ON. (0.25 V < or = sensor voltage < 4.85 V) Without the above value, c23 is indicated.
TO sensor, wiring/coupler connection.
c24 Ignition signal #1 (Front cylinder) circuit malfunction CKP sensor (pick-up coil) signal is produced but signal from ignition coil is not produced continuous two times. In this case, the code c24 (for front cylinder) is indicated. c25 is indicated if rear cylinder fails.
c25 Ignition signal #2 (Rear cylinder) circuit malfunction Ignition coil, wiring/coupler connection, power supply from the battery.
c31
Fixed to 6th gear
Gear position signal circuit malfunction Gear position signal voltage should be higher than the following for more than 2 seconds. (Gear position sensor voltage > 0.60 V) Without the above value, c31 is indicated.
Gear position sensor, wiring/coupler connection.Gearshift cam etc.
c32 or c34 Fuel injector signal #1 or #2 (Front cylinder) circuit malfunction Fuel injection signal stops, the c32, c33, c34 or c35 is indicated
c33 or c35 Fuel injection signal #3 or #4 (Rear cylinder) circuit malfunction Injector, wiring/coupler connection, power supply to the injector.
c41 Fuel pump relay signal circuit malfunction When no signal from fuel pump relay, c41 is indicated.
Fuel pump relay, connecting lead, power source to fuel pump relay.
c42 Ignition switch signal circuit malfunction Ignition switch signal is not input in the ECM.
Ignition switch, lead wire/coupler.

 

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