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
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Increased fuel consumption
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Transmission may not shift properly
Common Problems That Trigger the P0888 Code
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Transmission Control Module (TCM) failure
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Transmission Control Module (TCM) relay failure
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Wiring issue