P0890

TCM Power Relay Sense Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–33 (est.)

Symptoms

Gear shifting problems
Transmission transition to emergency mode
Check Engine Light Illuminates
Unstable engine operation at idle
Loss of engine power

Causes

Faulty TCM relay
Wiring harness damage
Poor contact in connectors
Blown fuse
Problems with the TCM module

How to Fix

Check the condition of the TCM circuit fuse
Inspect the TCM relay and replace if necessary
Check the integrity of wiring and connectors
Test the voltage in the relay circuit
If necessary, diagnose the TCM

Related codes

P0889 P0891 P0892