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KOEO/KOER SELF-TEST

BHE010200102T04

• The self-test function consists of the KOEO (Key On, Engine Off) self-test, performed when the ignition switch is turned to the ON position and the engine is stopped, and the KOER (Key On, Engine Running) self-test, performed when idling. If an abnormality is detected when either self-test is executed, a DTC 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 powertrain control system self-diagnosis, performed when the ignition switch is turned to the ON position 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 the inspection for 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 powertrain control system self-diagnosis, performed when the ignition switch is turned to the ON position 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 the inspection for set DTCs and if a malfunction is detected the DTC is displayed on the WDS or equivalent.

KOEO/KOER self-test table

×: Applicable
-: Not applicable

DTC No. | Condition | Test condition
--- | --- | ---
KOEO | KOER
P0030 | Front HO2S heater control circuit problem | - | ×
P0031 | Front HO2S heater control circuit low | - | ×
P0032 | Front HO2S heater control circuit high | - | ×
P0037 | Rear HO2S heater control circuit low | - | ×
P0038 | Rear HO2S heater control circuit high | - | ×
P0076 | VDI solenoid valve control circuit low | × | ×
P0077 | VDI solenoid valve control circuit high | × | ×
P0101 | MAF sensor circuit range/performance problem | - | -
P0102 | MAF sensor circuit low input | × | ×
P0103 | MAF sensor circuit high input | × | ×
P0107 | BARO sensor circuit low input | × | ×
P0108 | BARO sensor circuit high input | × | ×
P0111 | IAT sensor circuit range/performance problem | - | -
P0112 | IAT sensor circuit low input | × | ×
P0113 | IAT sensor circuit high input | × | ×
P0117 | ECT sensor circuit low input | × | ×
P0118 | ECT sensor circuit high input | × | ×
P0122 | TP sensor No.1 circuit low input | × | ×
P0123 | TP sensor No.1 circuit high input | × | ×
P0125 | Insufficient coolant temperature for closed loop fuel control | - | -
P0130 | Front HO2S circuit problem | - | ×
P0131 | Front HO2S circuit low voltage | - | ×
P0132 | Front HO2S circuit high voltage | - | ×
P0133 | Front HO2S circuit slow response | - | -
P0138 | Rear HO2S circuit high voltage | - | ×
P0139 | Rear HO2S circuit slow response | - | ×
P0171 | System too lean | - | ×
P0172 | System too rich | - | ×
P0222 | TP sensor No.2 circuit low input | × | ×
P0223 | TP sensor No.2 circuit high input | × | ×
P0300 | Random misfire detected | - | -
P0301 | Front rotor misfire detected | - | -
P0302 | Rear rotor misfire detected | - | -
P0327 | KS circuit low input | × | ×
P0328 | KS circuit high input | × | ×
P0335 | Eccentric shaft position sensor circuit problem | - | -
P0336 | Eccentric shaft position sensor circuit range/performance problem | - | ×
P0410 | AIR system problem | - | ×
P0420 | Catalyst system efficiency below threshold | - | -
P0443 | Purge solenoid valve circuit problem | - | ×
P0461 | Fuel gauge sender unit circuit range/performance problem | - | -
P0462 | Fuel gauge sender unit circuit low input | × | ×
P0463 | Fuel gauge sender unit circuit high input | × | ×
P0480 | Cooling fan No.1 control circuit problem | × | ×
P0481 | Cooling fan No.2 control circuit problem | × | ×
P0500 | VSS circuit problem | - | -
P0505 | Idle air control system problem | - | ×
P0562 | System voltage low (KAM) | × | ×
P0564 | Cruise control switch input circuit problem | × | ×
P0571 | Brake switch input circuit problem | × | ×
P0601 | PCM memory check sum error | × | ×
P0602 | PCM programming error | × | ×
P0604 | PCM random access memory error | × | ×
P0610 | PCM vehicle options error | × | ×
P0638 | Throttle actuator control circuit range/performance problem | - | -
P0661 | SSV solenoid valve control circuit low | × | ×
P0662 | SSV solenoid valve control circuit high | × | ×
P0703 | Brake switch No.1 input circuit problem | - | -
P0704 | CPP switch input circuit problem | - | -
P0850 | Neutral switch input circuit problem | - | -
P1260 | Immobilizer system problem | × | -
P1574 | TP sensor output incongruent | × | ×
P1577 | APP sensor output incongruent | × | ×
P1686 | Metering oil pump control circuit low flow side problem | - | ×
P1687 | Metering oil pump control circuit high flow side problem | - | ×
P1688 | Metering oil pump control circuit initial check problem | - | ×
P2006 | APV motor control circuit IC problem | - | -
P2008 | APV motor control circuit/open | × | ×
P2096 | Target A/F feedback system too lean | - | ×
P2097 | Target A/F feedback system too rich | - | ×
P2101 | Drive-by-wire relay control circuit problem | - | -
P2106 | Throttle actuator control system-forced limited power | - | -
P2107 | Throttle actuator control module processor error | × | ×
P2108 | Throttle actuator control module performance error | - | -
P2109 | TP sensor minimum stop range/performance problem | - | -
P2112 | Throttle actuator control system range/performance problem | - | -
P2119 | Throttle actuator control throttle body range/performance problem | × | ×
P2122 | APP sensor No.1 circuit low input | × | ×
P2123 | APP sensor No.1 circuit high input | × | ×
P2127 | APP sensor No.2 circuit low input | × | ×
P2128 | APP sensor No.2 circuit high input | × | ×
P2135 | TP sensor No.1/No.2 voltage correlation problem | × | ×
P2136 | TP sensor No.1/No.3 voltage correlation problem | × | ×
P2138 | APP sensor No.1/No.2 voltage correlation problem | × | ×
P2195 | Front HO2S signal stuck lean | - | ×
P2196 | Front HO2S signal stuck rich | - | ×
P2257 | AIR pump relay control circuit low | × | ×
P2258 | AIR pump relay control circuit high | × | ×
P2259 | AIR solenoid valve control circuit low | × | ×
P2260 | AIR solenoid valve control circuit high | × | ×
P2270 | Rear HO2S signal stuck lean | - | ×
P2271 | Rear HO2S signal stuck rich | - | ×
P2502 | Charging system voltage problem | - | ×
P2503 | Charging system voltage low | - | ×
P2504 | Charging system voltage high | - | ×