Volvo All Engines (2004 Emissions) Fault Code: PID 177 FMI 0 Transmission Oil Temperature

Fault Condition: The J1587 and J1939 serial data lines are used as the standard communication link for on-board vehicle instrumentation, off-board service diagnostics and fleet management. The Transmission Oil Temperature Sensor sends a signal to the Instrument Cluster Module (ICM) which relays a signal to the Engine Management System (EMS) Module via the data lines.

Possible repairs:

1) Verify that code PID 177 is set. If code PID 177 is not set, wiggle the harness and connectors to try to set the code. Visually inspect the VECU connectors and wires for poor connections.
2) Turn the ignition key OFF and connect a diagnostic computer. Turn the ignition key ON. Use the diagnostic computer to attempt to communicate with the Instrument Cluster Module (ICM).
If communication can be made with the Instrument Cluster Module (ICM), the fault may be intermittent. Wiggle the harness and connectors to try to set the code. If fault in the harness is found, repair or replace the harness.
If there is NO communication with the Instrument Cluster Module (ICM) via the diagnostic tool, go to the Trouble Shooting Procedure for the Data Lines.