ECM to TCM Engine Coolant Signal
Table of contents
P1800 CHEVROLET Possible Causes
- Faulty Transmission Control Module (TCM)
- Transmission Control Module (TCM) harness is open or shorted
- Transmission Control Module (TCM) circuit poor electrical connection
How do I fix code P1800 CHEVROLET?
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 P1800 CHEVROLET code
The cost of diagnosing the P1800 CHEVROLET 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)
P1800 CHEVROLET Description
With the key on, the Powertrain Control Module (PCM) receives a signal that indicated that the power supply to Transmission Control Module (TCM) was interrupted.