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 circuits at the Transmission Control Module when the TCM is energizing the relay.

POSSIBLE CAUSES
- Intermittent wiring and connectors
- Fused B+ circuit open
- Transmission control relay output circuit open
- Transmission relay control circuit open
- Transmission control relay ground circuit open
- Transmission control relay stuck open
- Transmission control relay output circuit short to ground
- Transmission relay control circuit short to ground
- TCM - Transmission control relay always off