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Fault codes U00xx: communication network (bus)

Communication codes between control units. The cause is often a connector, a wire, a power supply or a weak battery: the control unit named is not necessarily faulty.

Official codes: 116, from smallest to largest. Tap a code to get a direct link to share.

CodeMeaning
U0001High Speed CAN Communication Bus
U0002High Speed CAN Communication Bus Performance
U0003High Speed CAN Communication Bus (+) Open
U0004High Speed CAN Communication Bus (+) Low
U0005High Speed CAN Communication Bus (+) High
U0006High Speed CAN Communication Bus (-) Open
U0007High Speed CAN Communication Bus (-) Low
U0008High Speed CAN Communication Bus (-) High
U0009High Speed CAN Communication Bus (-) Shorted to Bus (+)
U0010Medium Speed CAN Communication Bus
U0011Medium Speed CAN Communication Bus Performance
U0012Medium Speed CAN Communication Bus (-) Open
U0013Medium Speed CAN Communication Bus (-) Low
U0014Medium Speed CAN Communication Bus (-) High
U0015Medium Speed CAN Communication Bus (-) Shorted to Bus (+)
U0016Medium Speed CAN Communication Bus Off
U0017Medium Speed CAN Communication Bus (+) Open
U0018Medium Speed CAN Communication Bus (+) Low
U0019Medium Speed CAN Communication Bus (+) High
U0020Low Speed CAN Communication Bus (+) Open
U0021Low Speed CAN Communication Bus (+) Low
U0022Low Speed CAN Communication Bus (+) High
U0023Low Speed CAN Communication Bus (+) Shorted to Bus (-)
U0024Low Speed CAN Communication Bus Off
U0025Low Speed CAN Communication Bus (-) Open
U0026Low Speed CAN Communication Bus (-) Low
U0027Low Speed CAN Communication Bus (-) High
U0028Vehicle Communication Bus A
U0029Vehicle Communication Bus B
U0030Powertrain Sensor Data Bus
U0031Vehicle Communication Bus C (+) Open
U0032Vehicle Communication Bus A (+) High
U0033Vehicle Communication Bus A (-) Open
U0034Vehicle Communication Bus A (-) Low
U0035Vehicle Communication Bus A (-) High
U0036Vehicle Communication Bus A (-) shorted to Bus A (+)
U0037Vehicle Communication Bus B
U0038Vehicle Communication Bus B Performance
U0039Vehicle Communication Bus B (+) Open
U0040Communication Bus Off
U0041Vehicle Communication Bus B (+) High
U0042Vehicle Communication Bus D (+) Open
U0043Vehicle Communication Bus B (-) Low
U0044Vehicle Communication Bus B (-) High
U0045Vehicle Communication Bus B (-) shorted to Bus B (+)
U0046Vehicle Communication Bus C
U0047Vehicle Communication Bus C Performance
U0048Vehicle Communication Bus C (+) Open
U0049Vehicle Communication Bus C (+) Low
U0050Vehicle Communication Bus E (+) Open
U0051Vehicle Communication Bus C (-) Open
U0052Vehicle Communication Bus C (-) Low
U0053Vehicle Communication Bus C (-) High
U0054Vehicle Communication Bus C (-) shorted to Bus C (+)
U0055Vehicle Communication Bus D
U0056Vehicle Communication Bus D Performance
U0057Vehicle Communication Bus D (+) Open
U0058Vehicle Communication Bus D (+) Low
U0059Vehicle Communication Bus D (+) High
U0060Vehicle Communication Bus F (+) Open
U0061Vehicle Communication Bus D (-) Low
U0062Vehicle Communication Bus D (-) High
U0063Vehicle Communication Bus D (-) shorted to Bus D (+)
U0064Vehicle Communication Bus E
U0065Vehicle Communication Bus E Performance
U0066Vehicle Communication Bus E (+) Open
U0067Vehicle Communication Bus E (+) Low
U0068Vehicle Communication Bus E (+) High
U0069Vehicle Communication Bus E (-) Open
U0070Communication Bus "B" Performance
U0071Vehicle Communication Bus A (+) Bus Off
U0072Vehicle Communication Bus A (-) Bus Off
U0073Control Module Communication Bus "A" Off
U0074Control Module Communication Bus "B" Off
U0075Control Module Communication Bus "B" Performance
U0076Control Module Communication Bus "C" Off
U0077Vehicle Communication Bus B Off
U0078Vehicle Communication Bus B (+) Open
U0079Vehicle Communication Bus B (+) Low
U007AControl Module Communication Bus H Off
U007BControl Module Communication Bus I Off
U007CControl Module Communication Bus J Off
U007DControl Module Communication Bus K Off
U007EControl Module Communication Bus L Off
U007FControl Module Communication Bus M Off
U0080Vehicle Communication Bus B (+) High
U0081Vehicle Communication Bus F Performance
U0082Vehicle Communication Bus F + Open
U0083Vehicle Communication Bus F + Low
U0084Vehicle Communication Bus F + High
U0085Vehicle Communication Bus F - Open
U0086Vehicle Communication Bus F - Low
U0087Vehicle Communication Bus F - High
U0088Vehicle Communication Bus F - Shorted to Bus F +
U0089Vehicle Communication Bus G
U008AVehicle Communication Bus G Performance
U008BVehicle Communication Bus G (+) Open
U008CVehicle Communication Bus G (+) Low
U008DVehicle Communication Bus G (+) High
U008EVehicle Communication Bus G (-) Open
U008FVehicle Communication Bus G (-) Low
U0090Vehicle Communication Bus G (-) High
U0091CAN Communication Bus "C" Off
U0092CAN Communication Bus "C" Performance
U0093Vehicle Communication Bus H Performance
U0094Vehicle Communication Bus H (+) Open
U0095Vehicle Communication Bus H (+) Low
U0096Vehicle Communication Bus H (+) High
U0097Vehicle Communication Bus H (-) Open
U0098Vehicle Communication Bus H (-) Low
U0099Vehicle Communication Bus H (-) High
U009AVehicle Communication Bus H (-) shorted to Bus H (+)
U009BVehicle Communication Bus I
U009CVehicle Communication Bus I Performance
U009DVehicle Communication Bus J
U009EVehicle Communication Bus J Performance

← B09xx · U01xx →

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Official meanings: OBDex (public domain, CC0). Manufacturer codes: dtc-database (MIT license), probable meanings not verified by the manufacturers. The same meaning can vary depending on the model: always have a diagnosis confirmed by a professional.