DTC P1635 Isuzu
5-Volt Reference Voltage A Circuit Malfunction
5-Volt Reference Voltage A Circuit Malfunction
Description
Engine started, engine running, system voltage more than 6.3v, and the PCM detected the 5v VREF A was less than 4.88v or more than 5.12v for 5 seconds within a 10 second sample during the CCM test.
Cause and Solution
VREF circuit is open (an internal fault inside the PCM)VREF circuit is shorted to ground (an internal fault in the PCM)VREF circuit shorted to ground between a sensor and the PCMPCM has failedTSB 01-04-S001 (7 01) contain information rel
Video Guide
Diagnostic Info
- DTC Code: P1635
- Brand: Isuzu