The control module detected a fault associated with the Long term fuel trim - at idle circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Alfa Romeo.
TuningBot DTC Database · v4.37.15
P1172 Diagnostic Trouble Code (11 interpretations)
11 manufacturer-specific interpretations across 11 manufacturers in the TuningBot DTC database.
Alfa Romeo
1 interpretation
BMW
1 interpretationThe control module detected that related sensor signals for Crankshaft position (CKP) sensor - timing did not agree with each other (correlation/plausibility fault). This is the manufacturer-specific definition used by BMW.
Possible causes
- CKP sensor
- reluctor
Chevrolet
1 interpretationThe control module detected a fault associated with the Fuel level sensors, primary & secondary sensor no fuel level change during fuel transfer from secondary to primary tank 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.
Possible causes
- Wiring
- fuel pump relays
- secondary fuel pump
- fuel level sensors
- ECM
Ford
1 interpretationThe control module registered the fault condition described as "Rotor Control Fault". This is the manufacturer-specific definition used by Ford.
Honda
1 interpretationThe control module detected that the Heated oxygen sensor (HO2S) 1, bank 1 value was outside the valid range. This is the manufacturer-specific definition used by Honda.
Possible causes
- Wiring
- HO2S
Kia
1 interpretationThe control module detected improper operation of the Electronic throttle system (ETS), throttle motor circuit. This is the manufacturer-specific definition used by Kia.
Possible causes
- Wiring
- throttle motor
Land Rover
1 interpretationThe control module detected that the air-fuel mixture stayed richer than the target despite full corrective control (System). This is the manufacturer-specific definition used by Land Rover.
Possible causes
- Intake/fuel system
- injectors
- H025
- MAF/VAF sensor
- ECT sensor
MINI
1 interpretationThe control module detected a fault associated with the Ambient Pressure Sensor Rationality Check circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by MINI.
Suzuki
1 interpretationThe control module detected that the air-fuel mixture stayed leaner than the target despite full corrective control (Lambda Controller Limit Malfunction Bank 1). This is the manufacturer-specific definition used by Suzuki.
VAG
1 interpretationThe control module detected that the Throttle motor position sensor 2 signal stayed below the expected range. This is the manufacturer-specific definition used by Audi.
Possible causes
- Wiring short to ground
- throttle motor position sensor
Volvo
1 interpretationThe control module detected that the air-fuel mixture stayed richer than the target despite full corrective control (System). This is the manufacturer-specific definition used by Volvo.
Possible causes
- Intake blocked
- EVAP canister purge valve
- fuel pressure high
- EGR system
- injector(s)
- HO2S
Related and nearby codes
How to read P1172
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Frequently asked questions about P1172
What does P1172 mean?
Diagnostic Trouble Code (11 interpretations). The control module detected a fault associated with the Long term fuel trim - at idle circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Alfa Romeo.
Is P1172 generic or manufacturer-specific?
P1172 is a manufacturer-specific code. In this database it is documented for: Alfa Romeo, BMW, Chevrolet, Ford, Honda, Kia, Land Rover, MINI, Suzuki, VAG, Volvo. The same number can mean something different on other brands.
Can TuningBot remove P1172 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.
Other file services
Understand the system behind this code: Oxygen Sensors (Lambda)
