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TuningBot DTC Database · v4.37.15

P1635 VAG - CAN data bus, AC - no signal

Manufacturer-specific interpretation for VAG. All interpretations of P1635

P · PowertrainNetworkOBD2

What P1635 means

P1635
CAN data bus, AC - no signal VAG · network Data confidence 62%

The control module did not receive the expected CAN data bus, AC signal. This is the manufacturer-specific definition used by Audi.

Possible causes

  • AC control module trouble code(s) stored
  • wiring
  • matching resistor in ECM
Applies to Audi

Related and nearby codes

How to read P1635

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

635

Specific fault index within the subsystem.

Frequently asked questions about P1635

What does P1635 mean?

CAN data bus, AC - no signal. The control module did not receive the expected CAN data bus, AC signal. This is the manufacturer-specific definition used by Audi.

Is P1635 generic or manufacturer-specific?

P1635 is a manufacturer-specific code. In this database it is documented for: VAG. The same number can mean something different on other brands.

Can TuningBot remove P1635 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningStage 1 dyno results for VAG engines See the results →

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