DTC Advanced Diagnostics: P0230 (2.0L Engine) (2024 2025)
DTC P0230 : Fuel Pump Primary Circuit
General Description
The powertrain control module (PCM) monitors the fuel pump control circuit for electrical malfunctions. The diagnosis is disabled under certain 12 volt battery voltage conditions. The described diagnosis will detect short circuits and open circuit. If the PGM-FI main relay 2 output voltage or current is a specified value, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 0.1 seconds or more |
| DTC Type | One drive cycle, MIL off |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage [Battery] | 8 V | 16 V |
| Vehicle | ON mode | |
[ ]: HDS Parameter
Malfunction Threshold
- Open circuit
The PGM-FI main relay 2 output voltage is between 3.26 - 4.7 V when the power stage is off.
- Short circuit to power
The PGM-FI main relay 2 output current is 2 A or more when the power stage is on.
- Short circuit to ground
The PGM-FI main relay 2 output voltage is 2.74 V or less when the power stage is off.
Possible Cause
The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- PGM-FI main relay 2 FUEL_PUMP_RLY_CL- line short to power
- PGM-FI main relay 2 FUEL_PUMP_RLY_CL- line short to ground
- PGM-FI main relay 2 FUEL_PUMP_RLY_CL- line open
- PCM internal circuit failure
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, a Pending DTC, a Confirmed DTC, the freeze data, and the on-board snapshot are stored in the PCM memory. The MIL does not come on.
Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.