What does code P2ACE mean?

Q: What does code P2ACE mean?

Reductant Temperature Sensor B Circuit Low. P2ACE indicates that the powertrain control module has detected a low voltage condition on the signal circuit of reductant temperature sensor B, which is used to monitor the temperature of the diesel exhaust fluid tank or lines. The computer compares the sensor's return voltage against expected values and sets this code when the signal falls below the calibrated minimum for a specified time.

DTC codes / P2Axx · Hybrid propulsion / P2ACE

P2ACEReductant Temperature Sensor B Circuit Low

P2ACE indicates that the powertrain control module has detected a low voltage condition on the signal circuit of reductant temperature sensor B, which is used to monitor the temperature of the diesel exhaust fluid tank or lines. The computer compares the sensor's return voltage against expected values and sets this code when the signal falls below the calibrated minimum for a specified time.

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.