Engine-Codes.com
Engine-Codes – Generic – P0887

P0887 Code - TCM Power Relay Control Circuit High

Quick Answer

The P0887 code refers to a malfunction in the Transmission Control Module (TCM) Power Relay Control Circuit, specifically indicating that the voltage signal from the TCM power relay control circuit is higher than the manufacturer's specified threshold. Common causes include Faulty TCM power relay, Shorted or open circuit in the TCM power relay control circuit, Corroded wiring or connectors. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0887 indicates TCM Power Relay Control Circuit High.
Common causes
Common causes include Faulty TCM power relay, Shorted or open circuit in the TCM power relay control circuit, Corroded wiring or connectors.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0887 Description

The P0887 code refers to a malfunction in the Transmission Control Module (TCM) Power Relay Control Circuit, specifically indicating that the voltage signal from the TCM power relay control circuit is higher than the manufacturer's specified threshold. This issue can impact the vehicle's ability to shift gears properly, leading to transmission problems and potentially causing the vehicle to go into "limp mode," where it operates in a restricted manner to prevent further damage.

OBDII Code P0887 - TCM Power Relay Control Circuit High
P0887 Code - TCM Power Relay Control Circuit High

Common Causes of P0887

  1. Faulty TCM power relay
  2. Shorted or open circuit in the TCM power relay control circuit
  3. Corroded wiring or connectors
  4. Issues with the TCM itself
  5. Electrical system malfunctions

Symptoms of P0887

  1. Difficulty shifting gears
  2. Harsh or delayed shifting
  3. Transmission slipping
  4. Loss of power
  5. Illumination of the Check Engine Light

How to Fix P0887

  1. Use a diagnostic scanner to retrieve the trouble code and confirm the issue.
  2. Inspect the TCM power relay and related wiring for any visible damage.
  3. Test the TCM power relay with a multimeter to ensure it is functioning correctly.
  4. Repair or replace any damaged wiring or connectors in the TCM power relay control circuit.
  5. If necessary, replace the TCM power relay or the TCM itself.

Cost to Fix P0887

The typical repair costs for addressing a P0887 code can range from $100 to $300, depending on the specific cause of the issue and the labor rates at the auto repair shop. It's important to note that additional diagnostic time may be required to pinpoint the exact problem, so the final cost could vary. As mentioned earlier, labor rates at auto repair shops can vary significantly, so it's advisable to obtain quotes from multiple shops to find the best price.

Need more information about the P0887 code?

Need more information on how to fix the P0887 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0887 code diagnosed by a professional: Find a repair shop in your area

Code P0887 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0887 Code

1. What are the common symptoms of OBDII code P0887 (TCM Power Relay Control Circuit High)?

- Common symptoms include issues with shifting gears, transmission not engaging properly, and the vehicle going into limp mode.

2. What are the possible causes of OBDII code P0887?

- Possible causes of code P0887 include a faulty TCM power relay, a short circuit in the wiring, a damaged TCM (Transmission Control Module), or a loose electrical connection.

3. How can I diagnose the TCM Power Relay Control Circuit High issue?

- Diagnosing this issue typically involves using a scan tool to read the trouble codes, checking the wiring and connections for any damage or corrosion, and testing the TCM power relay for proper functioning.

4. Can I continue driving my vehicle with OBDII code P0887 present?

- It is not recommended to drive the vehicle with code P0887 present, as it can lead to further damage to the transmission system and potentially cause safety hazards.

5. How can I repair OBDII code P0887 myself?

- DIY repair tips for code P0887 may include checking and replacing the TCM power relay, inspecting and repairing any damaged wiring, and ensuring all connections are secure and free of corrosion.

6. Is it necessary to reset the trouble codes after repairing OBDII code P0887?

- Yes, it is important to clear the trouble codes after repairing code P0887 to reset the system and see if the issue has been resolved.

7. Can a low battery voltage trigger OBDII code P0887?

- Yes, low battery voltage can sometimes trigger code P0887 as it may affect the overall electrical system of the vehicle, including the TCM power relay.

8. Will OBDII code P0887 cause permanent damage to the transmission?

- If left unaddressed, code P0887 can potentially cause damage to the transmission due to improper shifting and engagement. It is important to address the issue promptly.

9. How long does it typically take to repair OBDII code P0887?

- The repair time for code P0887 can vary depending on the underlying cause and the expertise of the person performing the repair. It may take anywhere from a few hours to a day.

10. How much does it cost to fix OBDII code P0887 at a repair shop?

- The cost of repairing OBDII code P0887 at a repair shop can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

Discuss the causes and fixes for P0887 OBDII Code

Submit a New Comment

  • Will this code make my trk not shift out of gear to start? Was driving fine then shifter felt hard.
    Shifter they all gears a few times. Seemed to get easier. Then it stayed in low one one my cluster, but the shifter shifts the vehicle in and out of gear by the cable but its shows low one on cluster and trk will not start. Plz help

    Reply to Comment

  • Yes, a bad relay will affect transmission shifting. What model and year is your vehicle?

    Reply to Comment