P1902
CAN Data Bus Multifunction Control Module 2
Severity
🔴 HighCan you drive?
Yes, but get it checked soon
Approx. repair cost
$56–278 (est.)
Symptoms
- Check Engine light comes on
- Unstable engine operation
- Malfunctions of various vehicle systems
- Lost connection with some sensors
- Problems with gear shifting (if the module is connected to the transmission)
Causes
- Multifunction control module 2 fault
- Open or short circuit in the CAN bus
- Oxidation or damage to contacts in connectors
- Module power problems
- Software failure in the control module
How to Fix
- Check the integrity of the CAN bus wiring
- Inspect and clean the contacts in the module connectors
- Check the power supply and ground of the module
- Scan all systems for additional errors
- If necessary, replace multifunction control module 2