DTC Troubleshooting: U0122: Notes
DTC U0122 : PF-CAN A Malfunction (TCM - VSA Modulator-Control Unit)
How to use this service information .
NOTICE:
Before you troubleshoot, review the How to Troubleshoot - Refer to: How to Troubleshoot the Fuel and Emissions Systems (1.5L Engine) or How to Troubleshoot the Brake Booster Pressure Monitoring System or How to Troubleshoot the Fuel and Emissions Systems (2.0L Engine) (2024 2025) or How to Troubleshoot the CVT System .
NOTE:
- DTC may be stored if VSA modulator-control unit does not start normally.
- DTC may be stored due to the power/ground circuit failure of the VSA modulator-control unit. Before this troubleshooting, check the power/ground circuit of the VSA modulator-control unit first.