KOEO/KOER SELF-TEST [L3 Turbo]

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• The self-test function consists of the KOEO (Key On, Engine Off) self-test, performed when the ignition switch is at ON, and the KOER (Key On, Engine Running) self-test, performed when idling. If an abnormality is detected as either self-test is executed, a is displayed on the WDS or equivalent. Using the self-test function, the present malfunction or a successful repair is readily confirmed. Refer to the self-test function table for the corresponding DTCs.

KOEO (Key ON, Engine Off) self-test
  ― The KOEO self-test is a power train control system self-diagnosis, performed when the ignition switch is at ON and the engine is stopped. A KOEO self-test begins when the connected WDS or equivalent sends an execute command to the PCM.
  ― As the KOEO self-test is performed, the PCM performs inspection for the set DTCs and if a malfunction is detected the DTC is displayed on the WDS or equivalent.

KOER (Key ON, Engine Running) self-test
  ― The KOER self-test is a power train control system self-diagnosis, performed when the ignition switch is at ON and the engine is idling. A KOER self-test begins when the connected WDS or equivalent sends an execute command to the PCM.
  ― As the KOER self-test is performed, the PCM performs inspection for the set DTCs and if a malfunction is detected the DTC is displayed on the WDS or equivalent.

KOEO/KOER self-test function table

×: Applicable
—: Not applicable

DTC No. | Condition | Test condition
--- | --- | ---
KOEO | KOER
P0011 | CMP Timing over-advanced | — | ×
P0012 | CMP Timing over-retarded | — | ×
P0030 | A/F sensor heater control circuit problem | × | ×
P0031 | A/F sensor heater circuit low input | × | ×
P0032 | A/F sensor heater circuit high input | × | ×
P0037 | HO2S heater circuit low input | × | ×
P0038 | HO2S heater circuit high input | × | ×
P0069 | Manifold absolute pressure/atmospheric pressure correlation | — | —
P0089 | Fuel pressure regulator performance | × | ×
P0091 | Fuel pressure regulator control circuit low | × | ×
P0092 | Fuel pressure regulator control circuit high | × | ×
P0096 | IAT sensor 2 circuit range/performance problem | — | —
P0097 | IAT sensor 2 circuit low | × | ×
P0098 | IAT sensor 2 circuit high | × | ×
P0101 | MAF circuit range/performance problem | — | —
P0102 | MAF circuit low input | × | ×
P0103 | MAF circuit high input | × | ×
P0107 | MAP sensor circuit low input | × | ×
P0108 | MAP sensor circuit high input | × | ×
P0111 | IAT circuit performance problem | — | —
P0112 | IAT circuit low input | × | ×
P0113 | IAT circuit high input | × | ×
P0117 | ECT circuit low input | × | ×
P0118 | ECT circuit high input | × | ×
P0122 | TP sensor No.1 circuit low input | × | ×
P0123 | TP sensor No.1 circuit high input | × | ×
P0125 | Excessive time to enter closed loop fuel control | — | —
P0131 | A/F sensor circuit low input | × | ×
P0132 | A/F sensor circuit high input | × | ×
P0133 | A/F sensor circuit problem | — | —
P0134 | A/F sensor circuit no activity detected | — | ×
P0138 | HO2S circuit high input | × | ×
P0140 | HO2S circuit no activity detected | — | ×
P0192 | Fuel rail pressure sensor circuit low input | × | ×
P0193 | Fuel rail pressure sensor circuit high input | × | ×
P0201 | Injector circuit/open cylinder No.1 | — | ×
P0202 | Injector circuit/open cylinder No.2 | — | ×
P0203 | Injector circuit/open cylinder No.3 | — | ×
P0204 | Injector circuit/open cylinder No.4 | — | ×
P0222 | TP sensor No.2 circuit low input | × | ×
P0223 | TP sensor No.2 circuit high input | × | ×
P0234 | Turbo/supercharger overboost condition | — | ×
P0245 | Turbocharger wastegate solenoid low | × | ×
P0246 | Turbocharger wastegate solenoid high | × | ×
P0300 | Random misfire detected | — | ×
P0301 | Cylinder No.1 misfire detected | — | ×
P0302 | Cylinder No.2 misfire detected | — | ×
P0303 | Cylinder No.3 misfire detected | — | ×
P0304 | Cylinder No.4 misfire detected | — | ×
P0327 | Knock sensor circuit low input | × | ×
P0328 | Knock sensor circuit high input | × | ×
P0335 | CKP sensor circuit malfunction | — | —
P0340 | CMP sensor circuit malfunction | — | —
P0403 | EGR valve (stepper motor) circuit malfunction | × | ×
P0421 | Catalyst system efficiency below threshold | — | —
P0443 | EVAP control system purge control valve circuit malfunction | × | ×
P0480 | Fan relay No.1 control circuit malfunction | × | ×
P0500 | Vehicle speed sensor (VSS) circuit malfunction | — | —
P0505 | Idle control system malfunction | — | ×
P0506 | Idle control system RPM lower than expected | — | —
P0507 | Idle control system RPM higher than expected | — | —
P0550 | PSP switch circuit malfunction | — | —
P0564 | Cruise control switch circuit malfunction | — | —
P0571 | Brake switch circuit malfunction | — | —
P0601 | Internal control module memory check sum error | × | ×
P0602 | PCM programming error | × | ×
P0604 | PCM RAM error | × | ×
P0606 | PCM processor | × | ×
P0607 | Control module performance | × | ×
P0610 | Control module vehicle options error | × | ×
P0611 | Fuel injector control module performance | × | ×
P0638 | Throttle actuator control range/performance | — | —
P0703 | Brake switch No.1 circuit malfunction | — | —
P0704 | Clutch switch circuit malfunction | — | —
P0850 | Neutral switch circuit malfunction | — | —
P2006 | Variable swirl control system shutter valve stuck closed | — | ×
P2009 | Variable swirl solenoid valve control circuit low | × | ×
P2010 | Variable swirl solenoid valve control circuit high | × | ×
P2088 | OCV actuator circuit low | × | ×
P2089 | OCV actuator circuit high | × | ×
P2096 | Target A/F feedback system too lean | — | —
P2097 | Target A/F feedback system too rich | — | —
P2100 | Throttle actuator circuit open | × | ×
P2101 | Throttle actuator circuit range/performance | — | ×
P2102 | Throttle actuator circuit low input | × | ×
P2103 | Throttle actuator circuit high input | × | ×
P2107 | Throttle actuator control module processor problem | — | ×
P2108 | Throttle actuator control module performance problem | — | ×
P2119 | Throttle actuator control throttle body range/performance | — | ×
P2122 | Accelerator pedal position (APP) sensor No.1 circuit low input | × | ×
P2123 | Accelerator pedal position (APP) sensor No.1 circuit high input | × | ×
P2127 | Accelerator pedal position (APP) sensor No.2 circuit low input | × | ×
P2128 | Accelerator pedal position (APP) sensor No.2 circuit high input | × | ×
P2135 | Throttle position sensor No.1/No.2 voltage correlation problem | × | ×
P2138 | Accelerator pedal position (APP) sensor No.1/No.2 voltage correlation problem | × | ×
P2177 | Fuel system too lean at off idle | — | ×
P2178 | Fuel system too rich at off idle | — | ×
P2187 | Fuel system too lean at idle | — | ×
P2188 | Fuel system too rich at idle | — | ×
P2195 | A/F sensor signal stuck lean | — | —
P2196 | A/F sensor signal stuck rich | — | —
P2228 | BARO sensor circuit low input | × | ×
P2229 | BARO sensor circuit high input | × | ×
P2237 | A/F sensor positive current control circuit open | × | ×
P2245 | A/F sensor reference voltage circuit low input | × | ×
P2246 | A/F sensor reference voltage circuit high input | × | ×
P2251 | A/F sensor negative current control circuit open | × | ×
P2502 | Generator terminal B circuit open | — | ×
P2503 | Generator output voltage signal no electricity | — | ×
P2504 | Battery overcharge | — | ×
P2507 | PCM +BB (back-up battery) voltage low | × | ×