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TuningBot DTC Database · v4.37.14

P2046 Reductant temperature sensor - circuit intermittent

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

P · PowertrainEmissionsOBD2

What P2046 means

P2046
Reductant temperature sensor - circuit intermittent Generic · emissions Data confidence 85%

The control module detected an unstable or intermittent signal in the Reductant temperature circuit.

Symptoms

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

Possible causes

  • Wiring
  • reductant temperature sensor

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

How to read P2046

P

Powertrain: engine, transmission and driveline systems.

2

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

046

Specific fault index within the subsystem.

Frequently asked questions about P2046

What does P2046 mean?

Reductant temperature sensor - circuit intermittent. The control module detected an unstable or intermittent signal in the Reductant temperature circuit.

Is P2046 generic or manufacturer-specific?

P2046 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P2046 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

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

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