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TuningBot DTC Database · v4.37.15

P1904 Diagnostic Trouble Code (4 interpretations)

4 manufacturer-specific interpretations across 3 manufacturers in the TuningBot DTC database.

P · PowertrainTransmissionOBD2

Ford

1 interpretation
P1904
Kickdown Solenoid Circuit High Voltage Ford · transmission Data confidence 80%

The control module detected that the signal in the Kickdown Solenoid circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Ford.

Mercedes-Benz

1 interpretation
P1904
CAN data bus, TCM/instrument panel - malfunction Mercedes-Benz · transmission Data confidence 62%

The control module detected improper operation of the CAN data bus, TCM/instrument panel. This is the manufacturer-specific definition used by Mercedes-Benz.

Possible causes

  • Wiring
  • trouble code(s) stored in other system(s)

VAG

2 interpretations
P1904
Engine coolant hydraulic blower motor solenoid - open circuit/short to ground VAG · climate_control Data confidence 62%

The control module detected an interruption (open circuit) in the Engine coolant hydraulic blower motor solenoid circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Wiring open circuit/short to ground
  • engine coolant hydraulic blower motor solenoid
Applies to Audi
P1904
Engine Coolant Hydraulic Blower Motor Solenoid Open Circuit/Short To Ground VAG · climate_control Data confidence 62%

The control module detected an interruption (open circuit) in the Engine Coolant Hydraulic Blower Motor Solenoid circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Volkswagen.

Applies to Volkswagen

Related and nearby codes

How to read P1904

P

Powertrain: engine, transmission and driveline systems.

1

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

904

Specific fault index within the subsystem.

Frequently asked questions about P1904

What does P1904 mean?

Diagnostic Trouble Code (4 interpretations). The control module detected that the signal in the Kickdown Solenoid circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Ford.

Is P1904 generic or manufacturer-specific?

P1904 is a manufacturer-specific code. In this database it is documented for: Ford, Mercedes-Benz, VAG. The same number can mean something different on other brands.

Can TuningBot remove P1904 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

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