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TuningBot DTC Database · v4.37.14

P2D1E Reductant System Leak Detected - Large Leak

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainEmissionsOBD2

What P2D1E means

P2D1E
Reductant System Leak Detected - Large Leak Generic · emissions Data confidence 65%

The control module detected a leak in the Reductant System during the system leak monitor.

Symptoms

  • MIL or SCR/AdBlue warning illuminated
  • Possible start-count-down or torque limitation on some applications

Possible causes

  • Reductant quality or level fault
  • Dosing valve or supply module fault
  • NOx sensor fault
  • Frozen or crystallized reductant lines
  • Wiring or connector fault

Recommended checks

  • Read NOx sensor values and dosing system status
  • Check reductant level and quality data
  • Inspect dosing valve, lines and heater operation
  • Check wiring and connectors of the SCR components
  • Check for OEM technical bulletins and software updates

Related and nearby codes

Related codes
P2D1DP2D1F
P2D range
P2D00P2D01P2D02P2D03P2D04P2D05P2D06P2D07P2D08P2D09P2D0AP2D0BP2D0CP2D0DP2D0EP2D0FP2D10P2D11

How to read P2D1E

P

Powertrain: engine, transmission and driveline systems.

2

Generic SAE-standard code: same meaning on every make.

D1E

Specific fault index within the subsystem.

Frequently asked questions about P2D1E

What does P2D1E mean?

Reductant System Leak Detected - Large Leak. The control module detected a leak in the Reductant System during the system leak monitor.

Is P2D1E generic or manufacturer-specific?

P2D1E is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P2D1E at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

Stage 1/2/3 TuningDPF RemovalEGR RemovalAdBlue / SCR RemovalDTC RemovalIMMO OFFSpeed Limiter (Vmax)

Understand the system behind this code: SCR / AdBlue System

ECU tuningDyno-tested results by model and engine See the results →

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