(Alternative Fuel) Gas Mass Sensor Circuit Range/Performance
Chrysler · engine
Data confidence62%
The control module judged the (Alternative Fuel) Gas Mass signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions. This is the manufacturer-specific definition used by Chrysler.
Recommended checks
Perform a full module scan
Review freeze-frame and occurrence data
Confirm the exact vehicle, ECU and software context
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
201
Specific fault index within the subsystem.
Frequently asked questions about P1201
What does P1201 mean?
(Alternative Fuel) Gas Mass Sensor Circuit Range/Performance. The control module judged the (Alternative Fuel) Gas Mass signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions. This is the manufacturer-specific definition used by Chrysler.
Is P1201 generic or manufacturer-specific?
P1201 is a manufacturer-specific code. In this database it is documented for: Chrysler. The same number can mean something different on other brands.
Can TuningBot remove P1201 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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