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). Symptoms range from rough running to limp-home, depending on which sensor stream is missing.
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). Symptoms range from rough running to limp-home, depending on which sensor stream is missing.
Common causes
- high
Sensor data bus wiring damaged
One of the most commonly reported causes for this code — check this first.
Typical part cost: $90-1650
- medium
Sensor module on bus failed
A plausible cause — test and verify before replacing parts.
Typical part cost: $90-1650
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does U0030 mean?
U0030 means "Powertrain Sensor Data Bus". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U0030?
sensor data bus wiring damaged; sensor module on bus failed; gateway module routing can messages incorrectly — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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