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TuningBot DTC Database · v4.37.15

P214B SCR NOx Catalyst Inlet Temperature Too High During Particulate Filter Regeneration

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

P · PowertrainEmissionsOBD2

What P214B means

P214B
SCR NOx Catalyst Inlet Temperature Too High During Particulate Filter Regeneration Generic · emissions Data confidence 65%

The control module detected that the SCR NOx Catalyst Inlet Temperature value was above the expected limit.

Symptoms

  • MIL or DPF warning illuminated
  • Possible reduced power or limp mode
  • Possible frequent regeneration attempts

Possible causes

  • Excessive soot load beyond regeneration limits
  • Differential pressure sensor or hose fault
  • Failed or interrupted regenerations (short trips)
  • Exhaust leak upstream of the sensor
  • Underlying engine fault increasing soot output

Recommended checks

  • Read soot load, ash load and differential pressure values
  • Check differential pressure sensor and hoses
  • Verify exhaust gas temperature sensor readings
  • Check for related injection, EGR or boost codes
  • Verify regeneration conditions can be met (trip profile)

Related and nearby codes

P21 range
P2100P2101P2102P2103P2104P2105P2106P2107P2108P2109P210AP210BP210CP210DP210EP2110P2111P2112

How to read P214B

P

Powertrain: engine, transmission and driveline systems.

2

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

14B

Specific fault index within the subsystem.

Frequently asked questions about P214B

What does P214B mean?

SCR NOx Catalyst Inlet Temperature Too High During Particulate Filter Regeneration. The control module detected that the SCR NOx Catalyst Inlet Temperature value was above the expected limit.

Is P214B generic or manufacturer-specific?

P214B is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P214B 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: DPF System

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

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