The P0884 trouble code indicates that the transmission control module (TCM) has detected an intermittent voltage signal issue in its power input circuit.
P0884 TCM Power Input Signal Intermittent
Code symptoms P0884.
1. Check Engine Light (CEL) is illuminated.
2. The transmission may intermittently enter limp mode, restricting gear selection and performance.
3. Intermittent difficulty shifting gears.
4. Harsh shifting or transmission slipping.
5. Intermittent decrease in fuel efficiency.
Causes of the code P0884.
1. Intermittent faults in the voltage regulator.
2. Intermittent short to power in the TCM power input circuit.
3. Intermittent corroded or loose electrical connections in the TCM power circuit.
4. Intermittently blown fuses related to the TCM power supply.
5. Intermittently faulty transmission control module (TCM).
Code Solutions P0884.
1. Replace the voltage regulator if it’s intermittently faulty.
2. Repair any intermittently occurring short to power in the TCM power input circuit.
3. Clean and tighten any intermittently corroded or loose electrical connections in the TCM power circuit.
4. Replace any intermittently blown fuses related to the TCM power supply.
5. If the TCM itself is intermittently faulty, it may need to be replaced and reprogrammed.
6. Clear the trouble codes from the vehicle’s computer after repairs are complete.
7. Test drive the vehicle to confirm that the intermittent issue has been resolved.