P1643
Powertrain Codes
P1643 - MAZDA - CAN Link ECM/TCM Circuit Network
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- Reprogram computer - Faulty ECM
Description
There is a communication problem with Control Area Network (CAN) link from the Engine Control Module (ECM)to the Transmission Control Module (TCM)