P2AAF

Diesel Fuel Presence Sensor Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine Light Is On
Possible problems starting the engine
Reduced engine power
Increased fuel consumption
Unstable engine operation at idle

Causes

Malfunction of the diesel fuel sensor
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Problems with the fuel system (high pressure)
Sensor contamination with fuel or impurities

How to Fix

Check the condition of the sensor and its connector
Check the integrity of the wiring to the sensor
Measure sensor resistance
Check the pressure in the fuel system
If necessary, replace the diesel fuel sensor

Related codes

P2AAE P2AAD P2AAC