CAN Link ECM/TCM Circuit Network
Table of contents
P1643 MAZDA Possible Causes
- Reprogram computer
- Faulty Engine Control Module (ECM)
How do I fix code P1643 MAZDA?
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 P1643 MAZDA code
The cost of diagnosing the P1643 MAZDA 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)
P1643 MAZDA Description
There is a communication problem with Control Area Network (CAN) link from the Engine Control Module (ECM) to the Transmission Control Module (TCM)