P2AAC

Diesel Fuel Presence Sensor Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable engine idling
Problems starting the engine

Causes

Open or short circuit in the sensor circuit
Malfunction of the diesel fuel sensor
Poor contact in the sensor connector
Wiring harness damage
Engine control unit malfunction

How to Fix

Check the integrity of the sensor circuit
Check connections and sensor connector
Replace the diesel fuel sensor if necessary
Check and replace wiring harness if necessary
Test the engine control unit

Related codes

P2AAB P2AAD P2AAE