Malfunction of Memory Backup
Table of contents
P1637 MITSUBISHI Possible Causes
- Faulty Transmission Control Module (TCM)
- TCM harness is open or shorted
- TCM circuit poor electrical connection
How do I fix code P1637 MITSUBISHI?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1637 MITSUBISHI code
The cost of diagnosing the P1637 MITSUBISHI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1637 MITSUBISHI Description
When the ignition switch is turned to the ON position, the Transmission Control Module (TCM) determines that the writing to the EEPROM area had failed last time the ignition switch was turned to the LOCK (OFF) position.