P2082

Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 1

P2082 is a generic OBD-II powertrain diagnostic trouble code: Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 1. It is logged by the engine control unit when the scr/adblue monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.

Code
P2082
Group
Powertrain
System
SCR/AdBlue
Severity
Warning (MIL on)
Need P2082 disabled?
RaceTune permanently disables any OBD-II trouble code on supported ECUs — for motorsport, off-road, and export use.
→

What P2082 means

P2082 indicates that the exhaust gas temperature (EGT) sensor at Bank 1, Sensor 3 position is producing a signal that is within the electrically valid range but does not correlate with expected exhaust temperatures based on current engine operating conditions. Sensor 3 is typically located downstream of the diesel particulate filter (DPF) or SCR catalyst, depending on the exhaust after-treatment configuration.

The ECM uses EGT sensor data to monitor after-treatment system temperatures, manage DPF regeneration events, and protect the after-treatment components from thermal damage. A range or performance fault at this position may affect the accuracy of DPF regeneration control or SCR temperature management.

The fault can result from a sensor that has drifted out of calibration due to extended heat exposure, a partial wiring fault causing signal perturbation without a full open or short, or exhaust gas flow anomalies caused by a clogged or damaged catalyst. Diagnosis should include comparing live sensor data to expectations before replacing the sensor.

Common causes

Most-frequently reported root causes when P2082 is logged.

  • 1
    EGT sensor at Bank 1 Sensor 3 drifted out of calibration from prolonged heat exposure.
  • 2
    Partial wiring fault such as high resistance in the signal or reference circuit.
  • 3
    Damaged or cracked sensor element causing inaccurate readings.
  • 4
    Clogged DPF or catalyst affecting exhaust gas flow and temperature distribution.
  • 5
    Exhaust leaks upstream of the sensor diluting exhaust gases and lowering measured temperature.
  • 6
    Connector corrosion causing intermittent resistance changes in the circuit.

Symptoms drivers notice

MIL illuminated.
Possible inaccurate DPF regeneration management.
DPF regeneration may occur more or less frequently than normal.
SCR system temperature management may be affected.
No immediate drivability symptoms in most cases.

How to diagnose P2082

A typical diagnostic flow when this code is present.

  1. 1
    Read all DTCs and identify the Bank 1 Sensor 3 location in the specific vehicle exhaust layout.
  2. 2
    Check live EGT sensor data at idle, cold start, and during a warm operating cycle, comparing values against other EGT sensors and known temperature expectations.
  3. 3
    Inspect the sensor wiring and connector for corrosion, chafing, or heat damage.
  4. 4
    Measure sensor resistance or voltage signal and compare to the manufacturer's temperature-resistance chart.
  5. 5
    Check for exhaust leaks upstream of the sensor that could affect temperature readings.
  6. 6
    Inspect the DPF or downstream catalyst for blockage that could alter temperature distribution.
  7. 7
    Replace the sensor if it fails specification tests after wiring has been confirmed sound.

Related powertrain codes

Frequently asked questions

Where is Bank 1 Sensor 3 located?

It is the third EGT sensor on Bank 1, typically positioned downstream of the DPF or after the SCR catalyst. The exact location varies by exhaust system design.

Will P2082 affect DPF regeneration?

Yes. The ECM relies on downstream EGT readings to confirm successful DPF regeneration and to prevent overheating. A faulty sensor can disrupt regeneration logic.

Can an exhaust leak cause P2082?

Yes. An exhaust leak upstream of the sensor can introduce cooler ambient air, causing the sensor to read lower temperatures than expected and triggering a performance fault.

Is P2082 dangerous to ignore?

While not immediately critical, ignored EGT faults can lead to uncontrolled DPF regeneration, catalyst overheating, or missed emission control events over time.

Disabling P2082 in software

RaceTune can permanently disable P2082 — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.

Permanent
The monitor is disabled in the ECU itself — not just cleared. It cannot return.
Tailored to your file
Each patch is matched to your specific software version — never a one-size-fits-all file.
Reversible
The original file is always preserved. Reflash the stock to return the ECU to factory state.

Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.

Got P2082 in your scan?

Upload your ECU file — we'll identify the exact software version and confirm whether a disable is available for your car.

Upload your file