What does code P1478 mean?

Q: What does code P1478 mean?

Battery Temp Sensor Voltage Out Of Limit. P1478 on Chrysler vehicles indicates that the battery temperature sensor circuit has reported a voltage outside the range the powertrain control module (PCM) considers valid. The PCM monitors this sensor to protect the battery from overheating during charging, and it sets the code when the signal voltage is too high or too low for the current conditions.

DTC codes / Chrysler codes / P1478

P1478 · ChryslerBattery Temp Sensor Voltage Out Of Limit

P1478 on Chrysler vehicles indicates that the battery temperature sensor circuit has reported a voltage outside the range the powertrain control module (PCM) considers valid. The PCM monitors this sensor to protect the battery from overheating during charging, and it sets the code when the signal voltage is too high or too low for the current conditions.

SystemPowertrain

Code typeChrysler specific

SeverityMedium

Fix difficultyIntermediate

AreaAuxiliary emission controls

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