U0402
Invalid Data Received from TCM
2016-2021 Mazda CX-3 2.0L I4 🇨🇦
Moderate SeverityNetwork
Description
The data received from the Transmission Control Module is invalid, out of range, or corrupted.
Symptoms
- Transmission shifting issues
- Erratic shift points
- Check Engine Light
- Transmission slip feeling
- Limp mode
Common Causes
- TCM software glitch
- CAN bus noise on TCM circuit
- TCM internal failure
- Bad ground connection
- Wiring interference near TCM
Diagnostic Steps
- Check TCM for stored codes
- Update TCM software
- Test CAN bus signal quality at TCM
- Inspect TCM ground connections
- Check for wiring damage near TCM
Repair Notes
Reprogram TCM. Check CAN bus quality and TCM ground connections.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0005High Speed CAN Communication Bus (+) High
U0402 on Other Vehicles
Common Questions
What does code U0402 mean on a 2016-2021 Mazda CX-3?
U0402 stands for "Invalid Data Received from TCM". The data received from the Transmission Control Module is invalid, out of range, or corrupted.
What are the symptoms of U0402 on a Mazda CX-3?
Common symptoms of U0402 include: Transmission shifting issues, Erratic shift points, Check Engine Light, Transmission slip feeling, Limp mode.
What causes U0402 on a 2016-2021 Mazda CX-3?
Common causes of U0402 include: TCM software glitch, CAN bus noise on TCM circuit, TCM internal failure, Bad ground connection, Wiring interference near TCM.