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.
TuningBot DTC Database · v4.37.15
P1904 Diagnostic Trouble Code (4 interpretations)
4 manufacturer-specific interpretations across 3 manufacturers in the TuningBot DTC database.
Ford
1 interpretation
Mercedes-Benz
1 interpretationThe 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 interpretationsThe 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
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.
Related and nearby codes
How to read P1904
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
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
Understand the system behind this code: Diagnostic Strategy and DTC Logic
