Serial Communication Problem with TCM
Table of contents
P1602 KIA Possible Causes
- Faulty Transaxle Control Module(TCM) or Engine Control Module(ECM)
- Transaxle Control Module(TCM) to Engine Control Module(ECM) harness is open or shorted
- Transaxle Control Module(TCM) to Engine Control Module(ECM) circuit poor electrical connection
How do I fix code P1602 KIA?
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 P1602 KIA code
The cost of diagnosing the P1602 KIA 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)
P1602 KIA Description
A communication line exists between the Engine Control Module(ECM) and the Transaxle Control Module(TCM). The communication is through a Control Area Network(CAN). Without CAN communication, an independent pin and wiring is needed to receive a sensor information from a ECM. The more information to be communicated, the more wirings is required. In case of CAN communication type, all the information need to be communicated among control modules such as ECM and TCM use CAN lines.