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Ford
Honda
Hyundai
Jaguar
Nissan
PSA
P1731
1 - 2 Shift Malfunction
Ford · engine
Data confidence
80%
The control module detected improper operation of the 1 - 2 Shift. This is the manufacturer-specific definition used by Ford.
TuningBot DTC Database · v4.37.15
P1731 Diagnostic Trouble Code (6 interpretations)
6 manufacturer-specific interpretations across 6 manufacturers in the TuningBot DTC database.
Ford
1 interpretation
Honda
1 interpretation
P1731
AT - gear shift malfunction
Honda · engine
Data confidence
62%
The control module detected improper operation of the AT - gear shift. This is the manufacturer-specific definition used by Honda.
Possible causes
- Transmission fluid
- wiring
- shift solenoid E
- AT clutch pressure control solenoid A
- ECM
Hyundai
1 interpretation
P1731
Front Speed Sensor - High Input
Hyundai · engine
Data confidence
62%
The control module detected that the Front Speed signal stayed above the expected range. This is the manufacturer-specific definition used by Hyundai.
Jaguar
1 interpretation
P1731
Inconsistent Gear Ratio
Jaguar · transmission
Data confidence
62%
The control module detected a fault associated with the Inconsistent Gear Ratio circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Jaguar.
Nissan
1 interpretation
P1731
A/T 1st Engine Brake
Nissan · engine
Data confidence
62%
The control module detected a fault associated with the A/T 1st Engine Brake circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Nissan.
PSA
1 interpretation
P1731
Gearbox actuator position in gear engagement shaft signal fault : coherence
PSA · transmission
Data confidence
72%
The control module detected that the Gearbox actuator position in gear engagement shaft signal fault was not coherent with related operating data. Documented for the MCP 6-speed piloted manual gearbox ECU on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Applies to
Peugeot MCP 6-speed piloted manual gearbox ECU
Related and nearby codes
How to read P1731
P
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
731
Specific fault index within the subsystem.
Frequently asked questions about P1731
What does P1731 mean?
Diagnostic Trouble Code (6 interpretations). The control module detected improper operation of the 1 - 2 Shift. This is the manufacturer-specific definition used by Ford.
Is P1731 generic or manufacturer-specific?
P1731 is a manufacturer-specific code. In this database it is documented for: Ford, Honda, Hyundai, Jaguar, Nissan, PSA. The same number can mean something different on other brands.
Can TuningBot remove P1731 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