Fuel / Air MeteringModerate ImpactPetrol

P0038 — Diagnostic Trouble Code P0038

OBD-II diagnostic code P0038 relates to the fuel / air metering system. This code is logged when the ECU detects a parameter outside its expected operating range.

5+

Affected Brands

6+

ECU Platforms

2

Related Services

7

Related DTCs

Symptoms

What the driver typically experiences when P0038 is stored

!Check Engine Light
iPossible drivability issues
iAltered fuel consumption

Why does P0038 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 P0038

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 P0038

Catalyst OffDTC Off

Related Diagnostic Codes

Codes from the same diagnostic system as P0038

P0138Moderate Impact

Diagnostic Trouble Code P0138

P0037Low Impact

HO2S Heater Control Circuit Low (Bank 1 Sensor 2)

P0036Low Impact

HO2S Heater Control Circuit (Bank 1 Sensor 2)

P0136Low Impact

O2 Sensor Circuit (Bank 1 Sensor 2)

P0137Moderate Impact

Diagnostic Trouble Code P0137

P0140Moderate Impact

Diagnostic Trouble Code P0140

P0158Moderate Impact

Diagnostic Trouble Code P0158

Affected ECU Platforms

Siemens/Continental GPEC2ABosch MG1CS201Siemens/Continental SIMOS18Bosch MEVD17.2.GSiemens/Continental SIM2K-260DENSO SH7058

Commonly Affected Vehicles

DodgeChargerSiemens/Continental GPEC2A
BMW5 Serie - SedanBosch MG1CS201
VWGolfSiemens/Continental SIMOS18
BMW3erBosch MEVD17.2.G
KiaStingerSiemens/Continental SIM2K-260
VolvoS60 / V60DENSO SH7058

Based on data from 5+ vehicle brands. P0038 is not limited to these models.

Frequently Asked Questions

What does P0038 mean?â–¼
OBD-II diagnostic code P0038 relates to the fuel / air metering system. This code is logged when the ECU detects a parameter outside its expected operating range.
Why does P0038 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 P0038 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 P0038?â–¼
P0038 is commonly found on Dodge, BMW, VW, Kia, Volvo vehicles equipped with Siemens/Continental GPEC2A, Bosch MG1CS201, Siemens/Continental SIMOS18, Bosch MEVD17.2.G ECU platforms.
What other codes appear alongside P0038?â–¼
P0038 frequently appears together with P0138, P0037, P0036, P0136, P0137. These related codes typically originate from the same system modification and should be addressed together in the calibration.

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