OBD-II code · Powertrain (generic)
P054E Idle Control System Fuel Quantity Lower Than Expected
At idle the ECU expects a calibrated fuel quantity to maintain set-speed. The actual quantity is significantly less than modelled - typical for a tight engine, very low friction, dragging accessory load missing, or implausible idle airflow.
Is it safe to drive with P054E?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyExpected accessory load missing
- PossibleIdle airflow offset
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Idle Control Strategy, Fuel Metering
Related codes
- P054BCold Start B Camshaft Position Timing Over-Retarded Bank 1
- P054CCold Start B Camshaft Position Timing Over-Advanced Bank 2
- P054DCold Start B Camshaft Position Timing Over-Retarded Bank 2
- P054FIdle Control System Fuel Quantity Higher Than Expected
- P0550Power Steering Pressure Sensor Circuit
- P0551Power Steering Pressure Sensor Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.