Emissions / AuxiliaryLow ImpactDiesel

P0407 — Diagnostic Trouble Code P0407

OBD-II diagnostic code P0407 relates to the emissions / auxiliary system. This code is logged when the ECU detects a parameter outside its expected operating range.

4+

Affected Brands

6+

ECU Platforms

2

Related Services

4

Related DTCs

Symptoms

What the driver typically experiences when P0407 is stored

!Check Engine Light
iFailed emissions test
iNo major drivability impact

Why does P0407 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 P0407

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 P0407

EGR OffDTC Off

Related Diagnostic Codes

Codes from the same diagnostic system as P0407

P0405Low Impact

EGR Position Sensor Circuit Low

P0406Low Impact

Diagnostic Trouble Code P0406

P0401Low Impact

Exhaust Gas Recirculation (EGR) Flow Insufficient

P0403Low Impact

Exhaust Gas Recirculation (EGR) Control Circuit

Affected ECU Platforms

Delphi DCM6.2Siemens/Continental PCR2.1Bosch EDC17CP09Siemens/Continental SID20XBosch EDCBosch EDC16U34

Commonly Affected Vehicles

VWTransporterDelphi DCM6.2
VWCaddySiemens/Continental PCR2.1
BMWX5Bosch EDC17CP09
Jaguar2.7DSiemens/Continental SID20X
AudiA4Bosch EDC

Based on data from 4+ vehicle brands. P0407 is not limited to these models.

Frequently Asked Questions

What does P0407 mean?â–¼
OBD-II diagnostic code P0407 relates to the emissions / auxiliary system. This code is logged when the ECU detects a parameter outside its expected operating range.
Why does P0407 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 P0407 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 P0407?â–¼
P0407 is commonly found on VW, BMW, Jaguar, Audi vehicles equipped with Delphi DCM6.2, Siemens/Continental PCR2.1, Bosch EDC17CP09, Siemens/Continental SID20X ECU platforms.
What other codes appear alongside P0407?â–¼
P0407 frequently appears together with P0405, P0406, P0401, P0403. These related codes typically originate from the same system modification and should be addressed together in the calibration.

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