What does code P2AAC mean?

Q: What does code P2AAC mean?

Diesel Fuel Presence Sensor Circuit. P2AAC indicates that the powertrain control module has detected a fault in the diesel fuel presence sensor circuit, which is used to verify that the fuel being burned is actually diesel and not a contaminant such as gasoline or water. The computer monitors the sensor's signal voltage and sets this code when the reading falls outside the expected range or the circuit fails a rationality check.

DTC codes / P2Axx · Hybrid propulsion / P2AAC

P2AACDiesel Fuel Presence Sensor Circuit

P2AAC indicates that the powertrain control module has detected a fault in the diesel fuel presence sensor circuit, which is used to verify that the fuel being burned is actually diesel and not a contaminant such as gasoline or water. The computer monitors the sensor's signal voltage and sets this code when the reading falls outside the expected range or the circuit fails a rationality check.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.