TuningBot DTC Database · v4.37.15
6 manufacturer-specific interpretations across 5 manufacturers in the TuningBot DTC database.
ChevroletThe control module detected a fault associated with the HO2S Rich Average Bank 2 Sensor 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chevrolet.
FordThe control module detected improper operation of the Fuel Selector Switch circuit. This is the manufacturer-specific definition used by Ford.
MINIThe control module detected that the signal in the O2 Sensor Heater circuit stayed below the expected operating range. This is the manufacturer-specific definition used by MINI.
PSAThe stored code identifies a fault of the Motorised throttle signal 2. Documented for the Magneti Marelli MM6KP engine ECU (EW7A/EW10A) on Peugeot applications; the same PSA control units are also fitted to Citroën models. PSA documentation does not characterise the failure mode further.
VAGThe control module detected an interruption (open circuit) in the Manifold absolute pressure (MAP) circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.
The control module detected an interruption (open circuit) in the Manifold absolute pressure (MAP) circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Volkswagen.
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Diagnostic Trouble Code (6 interpretations). The control module detected a fault associated with the HO2S Rich Average Bank 2 Sensor 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chevrolet.
P1156 is a manufacturer-specific code. In this database it is documented for: Chevrolet, Ford, MINI, PSA, VAG. The same number can mean something different on other brands.
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.
Understand the system behind this code: Oxygen Sensors (Lambda)
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