Gearbox external fault during the restarting phase
PSA · transmission
Data confidence72%
The stored code identifies a fault of the Gearbox external fault during the restarting phase. Documented for the MCP 6-speed piloted manual gearbox ECU on Peugeot applications; the same PSA control units are also fitted to Citroën models. PSA documentation does not characterise the failure mode further.
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
843
Specific fault index within the subsystem.
Frequently asked questions about P1843
What does P1843 mean?
Gearbox external fault during the restarting phase. The stored code identifies a fault of the Gearbox external fault during the restarting phase. Documented for the MCP 6-speed piloted manual gearbox ECU on Peugeot applications; the same PSA control units are also fitted to Citroën models. PSA documentation does not characterise the failure mode further.
Is P1843 generic or manufacturer-specific?
P1843 is a manufacturer-specific code. In this database it is documented for: PSA. The same number can mean something different on other brands.
Can TuningBot remove P1843 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.
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