Heated oxygen sensor (HO2S) control 1 - system too rich
Mercedes-Benz · emissions
Data confidence62%
The control module detected that the air-fuel mixture stayed richer than the target despite full corrective control (Heated oxygen sensor (HO2S) control 1 - system). This is the manufacturer-specific definition used by Mercedes-Benz.
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
132
Specific fault index within the subsystem.
Frequently asked questions about P1132
What does P1132 mean?
Heated oxygen sensor (HO2S) control 1 - system too rich. The control module detected that the air-fuel mixture stayed richer than the target despite full corrective control (Heated oxygen sensor (HO2S) control 1 - system). This is the manufacturer-specific definition used by Mercedes-Benz.
Is P1132 generic or manufacturer-specific?
P1132 is a manufacturer-specific code. In this database it is documented for: Mercedes-Benz. The same number can mean something different on other brands.
Can TuningBot remove P1132 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.