U0092

CAN Communication Bus \"C\" Performance

Moderate severity

Bus C shows degraded performance with elevated error counters but has not yet gone bus-off. Sporadic message losses on modules attached to Bus C.

Common causes

Marginal Bus C wiring or connector
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $90-1320
One module on Bus C transmitting marginal frames
A plausible cause — test and verify before replacing parts.
medium
Typical part cost: $90-1320
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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

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Frequently asked questions

What does U0092 mean?

U0092 means "CAN Communication Bus \"C\" Performance". It is a generic OBD-II code that points to a fault in the network / communication.

What are the most common causes of U0092?

marginal bus c wiring or connector; one module on bus c transmitting marginal frames; 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?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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