P0889 - TCM Power Relay Sense Circuit Range/Performance

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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P0889 Possible Causes

  • Faulty Transmission Control Module (TCM) Power Relay
  • Transmission Control Module (TCM) Power Relay harness is open or shorted
  • Transmission Control Module (TCM) Power Relay circuit poor electrical connection

First diagnose P0889 code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Cost of diagnosing the P0889 code

    Labor: 1.0

    The cost of diagnosing the P0889 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

P0889 Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0889 Description

The transmission control relay is used to supply power to the solenoid pack when the transmission is in normal operating mode. When the relay is off, no power is supplied to the solenoid pack and the transmission is in Limp-in mode. The relay output is fed back to the Powertrain Control Module (PCM). It is referred to as the Transmission Control Relay Output circuit or switched battery.
Immediately after a controller reset (ignition key turned to the run position or after cranking engine), the PCM verifies that the relay contacts are open by checking for no voltage at the switched battery terminals. After this is verified, the voltage at the pressure switches is checked. There should be no voltage on the pressure switches at this time. The PCM will then activate the relay.
OBDII Code P0889 - TCM Power Relay Sense Circuit Range/Performance - AutoCodes.com

P0889 More Information

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P0889 Information for specific makes

  • P0889 DODGE TCM Power Relay Sense Circuit Range/Performance

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