P0888

SYMPTOM
P0888 - RELAY OUTPUT ALWAYS OFF

WHEN MONITORED
Continuously

SET CONDITION
This code is set when less than 3 volts are present at the transmission control relay output (pins 16, 17 and 36) circuits at the Transmission Control Module (TCM) when the TCM is energizing the relay.

POSSIBLE CAUSES
- INTERMITTENT WIRING AND CONNECTORS
- FUSED B+ CIRCUIT OPEN
- TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN
- TRANSMISSION CONTROL RELAY CONTROL CIRCUIT OPEN
- TRANSMISSION CONTROL RELAY GROUND CIRCUIT OPEN
- TRANSMISSION CONTROL RELAY STUCK OPEN
- TRANSMISSION CONTROL RELAY CONTROL CIRCUIT SHORT TO GROUND
- TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT SHORT TO GROUND
- TCM - RELAY OUTPUT ALWAYS OFF