P0253Injection Pump Fuel Metering Control A Low (Cam/Rotor/Injector)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- These codes cover the electrically controlled fuel metering actuator on a diesel injection pump – on common rail usually an inlet metering valve on the high-pressure pump that sets how much fuel is compressed. P0253 means the actuator A circuit reads low. Saab's 2011 9-5 diesel uses it for a control wire shorted to ground for more than 1 s, with the warning light at once. Saab's 3.0 V6 diesel, whose pump has two metering valves, also includes an open circuit (over 2.1 s) and goes into limp mode: limited pedal response and injection quantity, rail pressure capped at 60 MPa, warning light if the fault recurs on the next trip. Ford's equivalent is P0003, GM's P0091.
- What you may notice
- Check engine light on
- Limp mode with limited power and speed
- Hard starting possible
- Likely causes
- LikelyControl wire to the metering actuator chafed to ground
- PossibleConnector or wire open (where makers include it under low)
- PossibleMetering actuator faulty internally
- RareEngine module faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.