Code Definition

P1907 — Controller Area Network data bus fault

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Audi

About P1907

P1907 is a manufacturer-specific powertrain diagnostic trouble code recorded for Audi vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1907 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

DTC P1907 is set when the engine control module (ECM) detects a fault on the Controller Area Network (CAN) data bus, the high speed serial network that carries messages between control modules such as the ECM, transmission control module (TCM), ABS module, instrument cluster, and the central gateway. The bus uses two wires, CAN High and CAN Low, and the ECM sets this code when expected messages are missing or corrupted, or when the bus voltages fall outside their normal window. Because so many systems share the bus, a fault can produce a range of symptoms, including several warning lamps at on...

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