Advanced Diagnostics

Advanced Diagnostics - DTC P0201: No. 1 Injector Circuit Malfunction
Advanced Diagnostics - DTC P0202: No. 2 Injector Circuit Malfunction
Advanced Diagnostics - DTC P0203: No. 3 Injector Circuit Malfunction
Advanced Diagnostics - DTC P0204: No. 4 Injector Circuit Malfunction

General Description






The injector supplies fuel to the engine and is controlled by the powertrain control module (PCM) ON/OFF command. The PCM monitors the injector condition, and if the return signal from the injector does not change for a specified time, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status






Enable Conditions






Malfunction Threshold
The return signal from the injector does not change at least 31 times (counts once per one engine cycle).

Diagnosis Details

Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.