P0891

Test 1:

Test 2 - 5:

Test 6 - 7:

SYMPTOM
P0891-TRANSMISSION RELAY ALWAYS ON

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

SET CONDITION
This DTC is set if the Powertrain Control Module senses greater than 3.0 volts on the Transmission Control Relay Output circuits prior to a request from the PCM to energize the Transmission Control Relay

POSSIBLE CAUSES
- Transmission control relay control circuit short to voltage
- Transmission control relay output circuit short to voltage
- Transmission solenoid/TRS assembly
- Powertrain control module
- Intermittent wiring and connectors