ItalianoIT
DeutschDE
EspañolES
PortuguêsPT
FrançaisFR
РусскийRU
Honda
Hyundai
Land Rover
Porsche
PSA
VAG
Volvo
P1671
A/T FI Data Line No Signal
Honda · engine
Data confidence
62%
The control module did not receive the expected A/T FI Data Line signal. This is the manufacturer-specific definition used by Honda.
TuningBot DTC Database · v4.37.14
P1671 Diagnostic Trouble Code (9 interpretations)
9 manufacturer-specific interpretations across 7 manufacturers in the TuningBot DTC database.
Honda
1 interpretation
Hyundai
1 interpretation
P1671
Injector Classification - Write Error
Hyundai · fuel
Data confidence
62%
The control module registered the fault condition described as "Injector Classification - Write Error". This is the manufacturer-specific definition used by Hyundai.
Land Rover
1 interpretation
P1671
Engine control module (ECM) cooling fan - circuit high
Land Rover · thermal_management
Data confidence
62%
The control module detected that the signal in the Engine control module (ECM) cooling fan circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Land Rover.
Possible causes
- Wiring open circuit
- cooling fan motor
Porsche
1 interpretation
P1671
Engine Compartment Purge Fan End - Stage
Porsche · emissions
Data confidence
62%
The control module detected a fault associated with the Engine Compartment Purge Fan End - Stage circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Porsche.
PSA
3 interpretations
P1671
ECU : Vehicle cruise control not plausible
PSA · driver_assistance
Data confidence
72%
The control module detected that the ECU was implausible for the operating conditions. Documented for the Delphi DCM 3.5 injection ECU (DW10C 2.0 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Applies to
Peugeot Delphi DCM 3.5 injection ECU (DW10C 2.0 HDi)
P1671
Cruise control
PSA · driver_assistance
Data confidence
72%
The stored code identifies a fault of the Cruise control. Documented for the Magneti Marelli MM6KP engine ECU (EW7A/EW10A) on Peugeot applications; the same PSA control units are also fitted to Citroën models. PSA documentation does not characterise the failure mode further.
Applies to
Peugeot Magneti Marelli MM6KP engine ECU (EW7A/EW10A)
P1671
Engine ECU : Cruise control fault
PSA · driver_assistance
Data confidence
72%
The control module detected the fault condition "Cruise control fault" for the Engine ECU. Documented for the Siemens SID 803 injection ECU (DW10BTED4 2.0 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Applies to
Peugeot Siemens SID 803 injection ECU (DW10BTED4 2.0 HDi)
VAG
1 interpretation
P1671
Valve for Pump - Jet: Cylinder 6 (N245): Electrical Malfunction
VAG · engine
Data confidence
80%
The control module detected an electrical fault in the Valve for Pump - Jet: Cylinder 6 (N245) circuit. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 18079. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).
Symptoms
Irregular rpm
Possible causes
- Wiring and/or connections to/from the Valve for Pump Jet
- Valve for Pump Jet
Recommended checks
Check wiring and Check / Clean all connections
Applies to
Volkswagen
Volvo
1 interpretation
P1671
Camshaft position (CMP) actuator - range/performance problem
Volvo · engine
Data confidence
62%
The control module judged the Camshaft position (CMP) actuator behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by Volvo.
Possible causes
- Wiring
- CMP actuator
Related and nearby codes
How to read P1671
P
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
671
Specific fault index within the subsystem.
Frequently asked questions about P1671
What does P1671 mean?
Diagnostic Trouble Code (9 interpretations). The control module did not receive the expected A/T FI Data Line signal. This is the manufacturer-specific definition used by Honda.
Is P1671 generic or manufacturer-specific?
P1671 is a manufacturer-specific code. In this database it is documented for: Honda, Hyundai, Land Rover, Porsche, PSA, VAG, Volvo. The same number can mean something different on other brands.
Can TuningBot remove P1671 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. 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: EVAP System