Motor-driven throttle unit, signal 2 : not characterized : Short circuit to earth
PSA · engine
Data confidence72%
The control module detected a short circuit to ground in the Motor-driven throttle unit, signal 2 circuit. Documented for the Magneti Marelli MM6KP engine ECU (EW7A/EW10A) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
157
Specific fault index within the subsystem.
Frequently asked questions about P1157
What does P1157 mean?
Motor-driven throttle unit, signal 2 : not characterized : Short circuit to earth. The control module detected a short circuit to ground in the Motor-driven throttle unit, signal 2 circuit. Documented for the Magneti Marelli MM6KP engine ECU (EW7A/EW10A) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Is P1157 generic or manufacturer-specific?
P1157 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 P1157 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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