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KOEO/KOER SELF-TEST [L3]

BME010200000T20
• The self-test function consists of the KOEO (Key On, Engine Off) self-test, performed when the ignition key is at ON, and the KOER (Key On, Engine Running) self-test, performed when idling. If a malfunction is detected as either self-test is executed, it 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 key 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 powertrain control system self-diagnosis, performed when the ignition key 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 | KOEO | KOER
--- | --- | --- | ---
P0031 | Front HO2S heater circuit low input | × | ×
P0032 | Front HO2S heater circuit high input | × | ×
P0037 | Rear HO2S heater circuit low input | × | ×
P0038 | Rear HO2S heater circuit high input | × | ×
P0101 | MAF sensor inconsistent with TP sensor | - | -
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 | × | ×
P0121 | Throttle position stuck closed | - | -
P0122 | TP circuit low input | × | ×
P0123 | TP circuit high input | × | ×
P0125 | Excessive time to enter closed loop fuel control | - | -
P0131 | Front HO2S no inversion (low stuck) | - | -
P0132 | Front HO2S no inversion (high stuck) | - | ×
P0133 | Front HO2S circuit malfunction | - | -
P0134 | Front HO2S circuit no activity detected | - | ×
P0138 | Rear HO2S circuit high input | - | -
P0140 | Rear HO2S circuit no activity detected | - | ×
P0171 | Fuel trim system too lean | - | -
P0172 | Fuel trim system too rich | - | -
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 motor coils open or short | × | ×
P0420 | Catalyst system efficiency below threshold | - | -
P0443 | Evaporative emission control system purge control valve circuit malfunction | × | ×
P0480 | Fan control module 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 | - | -
P0511 | IAC valve circuit malfunction | × | ×
P0550 | PSP switch circuit malfunction | - | -
P0661 | VIS circuit low input | × | ×
P0662 | VIS circuit high input | × | ×
P0703 | Brake switch input malfunction | - | -
P0704 | Clutch switch input malfunction | - | -
P0850 | Neutral switch input malfunction | - | -
P1562 | PCM +BB voltage low | × | ×
P1602 | Immobilizer unit-PCM communication error | × | -
P1603 | Key ID numbers are not registered in PCM | × | -
P1604 | Code word is not registered in PCM | × | -
P1621 | Code word does not match after engine cranking | × | -
P1622 | Key ID number does not match | × | -
P1623 | Code word or key ID number read/write error in PCM | × | -
P1624 | Immobilizer system communication counter=0 | × | -
P2006 | VTCS shutter valve stuck closed | - | -
P2009 | Variable tumble control solenoid circuit low input | × | ×
P2010 | Variable tumble control solenoid circuit high input | × | ×
P2228 | BARO sensor circuit low input | × | ×
P2229 | BARO sensor circuit high input | × | ×
P2502 | Generator output voltage signal no electricity | - | ×
P2503 | Battery overcharge | - | ×
P2504 | Generator terminal B circuit open | - | ×