Fuel / Air MeteringModerate ImpactPetrol

P0172 — Diagnostic Trouble Code P0172

OBD-II diagnostic code P0172 relates to the fuel / air metering system. This code is logged when the ECU detects a parameter outside its expected operating range.

6+

Affected Brands

12+

ECU Platforms

3

Related Services

4

Related DTCs

Symptoms

What the driver typically experiences when P0172 is stored

!Check Engine Light
iRough running or hesitation
iAltered fuel mixture

Why does P0172 appear after tuning?

This code may appear after ECU modifications when the affected system monitoring has not been fully recalibrated for the new operating parameters.

How proper calibration can address P0172

WEREMAP professional calibrations include comprehensive diagnostic management for all affected systems, preventing unnecessary fault codes while maintaining safe operation.

Related Tuning Services

Relevant services for the system behind P0172

Stage 1Stage 2DTC Off

Related Diagnostic Codes

Codes from the same diagnostic system as P0172

P0175Moderate Impact

Diagnostic Trouble Code P0175

P0171High Impact

System Too Lean (Bank 1)

P0300High Impact

Random/Multiple Cylinder Misfire Detected

P2271Low Impact

Diagnostic Trouble Code P2271

Affected ECU Platforms

Bosch MED9.1EFI P59GValeo vd46Bosch MEVD17.2.HSiemens/Continental SIMOS8.5Bosch MED17.4.2AC DELCO E39ABOSCH MED17.2.HBosch MEVD17.2.GValeo VD46.1Keihin SH7058Bosch MED17.1.1

Commonly Affected Vehicles

MazdaMazda 3EFI P59G
Peugeot308Valeo vd46
BMWX6 SUVBosch MEVD17.2.H
AudiQ5Siemens/Continental SIMOS8.5
BuickGL8AC DELCO E39A
BMW6 Serie GCBOSCH MED17.2.H
BMW5 Serie - SedanBosch MEVD17.2.G
HondaodysseyKeihin SH7058

Based on data from 6+ vehicle brands. P0172 is not limited to these models.

Frequently Asked Questions

What does P0172 mean?â–¼
OBD-II diagnostic code P0172 relates to the fuel / air metering system. This code is logged when the ECU detects a parameter outside its expected operating range.
Why does P0172 appear after ECU tuning?â–¼
This code may appear after ECU modifications when the affected system monitoring has not been fully recalibrated for the new operating parameters.
How do you prevent P0172 during remapping?â–¼
WEREMAP professional calibrations include comprehensive diagnostic management for all affected systems, preventing unnecessary fault codes while maintaining safe operation.
Which vehicles are affected by P0172?â–¼
P0172 is commonly found on Mazda, Peugeot, BMW, Audi, Buick, Honda vehicles equipped with Bosch MED9.1, EFI P59G, Valeo vd46, Bosch MEVD17.2.H ECU platforms.
What other codes appear alongside P0172?â–¼
P0172 frequently appears together with P0175, P0171, P0300, P2271. These related codes typically originate from the same system modification and should be addressed together in the calibration.

Ready to Get Started?

Create your free account and access our full vehicle database and tuning services.

Create Free Account