P0888 OBD-II: TCM Power Relay Sense Circuit
P0888 Severity
Will P0888 go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P0888?
If the Transmission Control Module (TCM) does not receive the correct amount of voltage, it will send a message to the engine control module (PCM) to set code P0888.
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What Does P0888 Code Mean?
OBD-II Code P0888 is defined as a TCM Power Relay Sense Circuit
If the Transmission Control Module (TCM) does not receive the correct amount of voltage, it will send a message to the engine control module (PCM) to set code P0888.
P0888 Symptoms
- Increased fuel consumption
- Transmission may not shift properly
Common Problems That Trigger the P0888 Code
- Transmission Control Module (TCM) failure
- Transmission Control Module (TCM) relay failure
- Wiring issue
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