What does code P2A4C mean?

Q: What does code P2A4C mean?

Alternative Fuel Temperature Sensor Range/Performance. P2A4C indicates that the powertrain control module (PCM) has detected an abnormal signal from the alternative fuel temperature sensor, which monitors the temperature of fuels such as compressed natural gas (CNG), liquefied petroleum gas (LPG), or ethanol blends. The PCM expects the sensor's voltage to change in a predictable way as the fuel warms up or cools down, and it sets this code when the signal stays out of range or does not respond as expected during a specified test period.

DTC codes / P2Axx · Hybrid propulsion / P2A4C

P2A4CAlternative Fuel Temperature Sensor Range/Performance

P2A4C indicates that the powertrain control module (PCM) has detected an abnormal signal from the alternative fuel temperature sensor, which monitors the temperature of fuels such as compressed natural gas (CNG), liquefied petroleum gas (LPG), or ethanol blends. The PCM expects the sensor's voltage to change in a predictable way as the fuel warms up or cools down, and it sets this code when the signal stays out of range or does not respond as expected during a specified test period.

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.