DPF / ExhaustLow ImpactDiesel

P2003 — Diagnostic Trouble Code P2003

OBD-II diagnostic code P2003 relates to the dpf / exhaust system. This code is logged when the ECU detects a parameter outside its expected operating range.

1+

Affected Brands

1+

ECU Platforms

1

Related Services

1

Related DTCs

Symptoms

What the driver typically experiences when P2003 is stored

!Check Engine Light
iDPF warning light
iForced regeneration attempts
!!Possible limp mode

Why does P2003 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 P2003

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 P2003

DTC Off

Related Diagnostic Codes

Codes from the same diagnostic system as P2003

P2002Moderate Impact

Diesel Particulate Filter Efficiency Below Threshold (Bank 1)

Affected ECU Platforms

Delphi DCM3.5

Commonly Affected Vehicles

FordMondeoDelphi DCM3.5

Based on data from 1+ vehicle brands. P2003 is not limited to these models.

Frequently Asked Questions

What does P2003 mean?â–¼
OBD-II diagnostic code P2003 relates to the dpf / exhaust system. This code is logged when the ECU detects a parameter outside its expected operating range.
Why does P2003 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 P2003 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 P2003?â–¼
P2003 is commonly found on Ford vehicles equipped with Delphi DCM3.5 ECU platforms.
What other codes appear alongside P2003?â–¼
P2003 frequently appears together with P2002. These related codes typically originate from the same system modification and should be addressed together in the calibration.

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