P0890

SYMPTOM
P0890 - SWITCHED BATTERY

WHEN MONITORED
When the ignition is turned from the "OFF" position to the "RUN" position and/or the ignition is turned from the "CRANK" position to the "RUN" position.

SET CONDITION
This DTC is set if the Transmission Control Module (TCM) senses voltage on any of the pressure switch inputs prior to the TCM energizing the relay.

NOTE: Due to the integration of the Powertrain and Transmission Control Modules, the transmission part of the PCM has its own specific power and ground circuits.

POSSIBLE CAUSES
- Intermittent wiring and connectors
- 2/4 pressure switch sense circuit short to voltage
- L/R pressure switch sense circuit short to voltage
- OD pressure switch sense circuit short to voltage
- PCM - switched battery