1, 2 and 3 Digit Codes: 154

Trouble Code Number
- Scan tool 154
- General scan tool P1492
- MIL 44

Fault Message
- Battery Temperature Sensor Voltage Too High

Background
- Battery temperature input is used to adjust the generator charging rate based upon the ambient temperature around the battery.

Range of Check
- Ignition switch: ON

Set Condition
- The sensor voltage remains more than 4.9 V for 3 seconds.

Probable Cause
- Battery temperature sensor failed
- PCM failed

Recommended action
- Replace the PCM.