P0887 Code - TCM Power Relay Control Circuit High
Quick Answer
The transmission control relay is used to supply power to the solenoid pack when the transmission is in normal operating mode. Common causes include 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. 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 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.
- 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.
Code P0887 Description
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.
What are the Possible Causes of the DTC P0887?
- 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
How to Fix the DTC P0887?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0887 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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
Information for Specific Makes
- P0887 Dodge — TCM Power Relay Control Circuit High
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
-
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 -
Yes, a bad relay will affect transmission shifting. What model and year is your vehicle?
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
