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.
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.
Common causes
- high
Expected accessory load missing
One of the most commonly reported causes for this code — check this first.
Typical part cost: $170-770
- medium
Idle airflow offset
A plausible cause — test and verify before replacing parts.
Typical part cost: $170-770
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P054E mean?
P054E means "Idle Control System Fuel Quantity Lower Than Expected". It is a generic OBD-II code that points to a fault in the vehicle speed, idle control, auxiliary inputs.
What are the most common causes of P054E?
expected accessory load missing; idle airflow offset — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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