OBD2 code U0030: Powertrain Sensor Data Bus
A fault has been detected on the dedicated powertrain sensor data bus (a sub-bus used for high-speed sensor data such as crank, knock or wheel-speed).
Detected Root Component
Network Component
Observed Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Possible Causes
- Sensor data bus wiring damaged
- Sensor module on bus failed
- Gateway module routing CAN messages incorrectly
Tools Required
Interactive Diagnostic
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Parts likely to be the cause (Moteur (général))
Moteur (général)
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Frequently asked questions about code U0030
What does code U0030 mean? ▾
OBD2 code U0030: Powertrain Sensor Data Bus. A fault has been detected on the dedicated powertrain sensor data bus (a sub-bus used for high-speed sensor data such as crank, knock or wheel-speed).
What are the symptoms of code U0030? ▾
Code U0030 may cause: Multiple warning lights may illuminate, Affected modules may go into limp mode or shut down, Specific functions inoperative depending on module, Diagnostic tools may show communication faults. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code U0030? ▾
The most common causes of code U0030 are: Sensor data bus wiring damaged, Sensor module on bus failed, Gateway module routing CAN messages incorrectly. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code U0030? ▾
Yes, code U0030 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.
How do I fix code U0030? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Sensor data bus wiring damaged, Sensor module on bus failed, Gateway module routing CAN messages incorrectly. Difficulty: Medium · Estimated time: 30-60min.