OBD code P0890 indicates a problem with the Transmission Control Module (TCM) Power Relay circuit.
Symptoms include the Engine Light being ON.
The issue is typically caused by a faulty TCM Power Relay or related wiring harness issues.
While not a critical concern, it should be addressed promptly to prevent potential transmission issues.
A possible fix involves inspecting and repairing the TCM Power Relay circuit and related components.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the p0890 OBD Code
The vehicle may experience issues with the transmission component related to fault code P0890.
- Symptoms: Engine Light ON.
- Vehicle may experience harsh shifting.
- Transmission may slip.
- Vehicle may go into limp mode.
Causes of the p0890 OBD Code
Do you know you can clear most fault codes—but some could mean serious danger? Don’t take chances with your safety or your family’s safety. This budget-friendly car scanner makes it easy to clear fault codes in seconds while showing you exactly what’s wrong. Plug it in, connect to your Android or iOS phone, and instantly check live data. You’ll know if it’s a minor issue you can clear or something serious that needs attention—so you can drive safely and stress-free. (Today’s Deal)
Possible triggers for fault code P0890 include issues with the transmission fluid pressure sensor.
- 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.
Fixing Error Code p0890 Step By Step
Address the transmission component slipping by inspecting and repairing the transmission fluid pressure sensor circuit.
- To fix OBDII code P0890, first, review the possible causes related to this code.
- Visually inspect the wiring harness and connectors associated with the transmission component.
- Check for any damaged components and ensure the connector pins are not broken, bent, pushed out, or corroded.
- If no issues are found during the visual inspection, proceed to test the transmission fluid pressure sensor.
- Replace the sensor if it is faulty.
- Clear the fault codes from the vehicle’s computer using a scan tool.
- Test drive the vehicle to verify that the P0890 code does not return.
Cost Of Fixing p0890 Fault Code
Diagnosing and repairing fault code P0890 typically involves addressing issues with the transmission component.
The cost to diagnose and fix OBD code P0890 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
The total cost depends on labor rates, shop fees, and the complexity of the transmission component causing the issue.
That fault code is a turning point. If repair costs are climbing and your current loan feels like it’s holding you back, this is the time to plan ahead. The free Car Loan Payment Tracker helps you see how quickly you can pay off what’s left—and start preparing, with confidence, for your dream car.
Details of the p0890 OBD Code
Code P0890 relates to a fault in the transmission component.
OBD code P0890 means Traction Control Module (TCM) Power Relay Sense Circuit Low.
This code is triggered when the TCM detects a low voltage condition in the power relay sense circuit.
The power relay sense circuit is responsible for monitoring the voltage level of the power relay that supplies power to the TCM.
When the voltage level drops below a specified threshold, the TCM sets code P0890 to indicate a potential issue with the power relay or its circuit.
Mechanic’s Tech Notes
Detailed information on diagnosing and repairing code P0890 related to the transmission component.
To diagnose and fix OBDII code P0890, start by checking the Transmission Control Module (TCM) power and ground using a multimeter.
Verify TCM communication over the Controller Area Network (CAN) using a scan tool.
If the TCM does not respond, reprogramming or reflashing may be necessary.
Visually inspect the wiring harness and connectors for any damage, and ensure connector pins are not broken, bent, pushed out, or corroded.
Address any issues found during the inspection to resolve the P0890 code.
FAQ
OBD code P0890 indicates an issue with the Transmission Control Module (TCM) Power Relay. Check relay, harness, and connections for faults.
Common symptoms of OBD code P0890 include Engine Light ON. Possible causes are faulty TCM Power Relay or related wiring issues. Fix: Inspect and repair wiring and connectors.
Diagnose and repair OBD code P0890 by checking for a faulty TCM power relay, open/shorted harness, or poor connection. Inspect wiring and connectors for damage or corrosion.
Wrap Up
If your transmission is slipping or shifting erratically and you see OBDII code P0890, it may be caused by a faulty transmission fluid pump, low transmission fluid levels, a clogged transmission filter, or a malfunctioning transmission control module.
To address OBDII code P0890, check the transmission fluid level and condition, inspect the transmission filter for blockages, test the transmission fluid pump for proper operation, and scan the transmission control module for any fault codes or issues.
