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TuningBot DTC Database · v4.37.15

P2ADD Reductant Tank Temperature Sensor B Circuit Intermittent/Erratic

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

P · PowertrainEmissionsOBD2

What P2ADD means

P2ADD
Reductant Tank Temperature Sensor B Circuit Intermittent/Erratic Generic · emissions Data confidence 65%

The control module detected an unstable or intermittent signal in the Reductant Tank Temperature Sensor B circuit.

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

P2A range
P2A00P2A01P2A02P2A03P2A04P2A05P2A06P2A07P2A08P2A09P2A0AP2A0BP2A0CP2A0DP2A0EP2A0FP2A10P2A11

How to read P2ADD

P

Powertrain: engine, transmission and driveline systems.

2

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

ADD

Specific fault index within the subsystem.

Frequently asked questions about P2ADD

What does P2ADD mean?

Reductant Tank Temperature Sensor B Circuit Intermittent/Erratic. The control module detected an unstable or intermittent signal in the Reductant Tank Temperature Sensor B circuit.

Is P2ADD generic or manufacturer-specific?

P2ADD is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P2ADD at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. 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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