Error code

OBD2 P2031

OBD2P2031
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Exhaust Gas Temperature Sensor Circuit.

Severity

moderateCan drive, but monitor for any changes in performance or warning lights.

Summary

P2031 indicates an issue with the exhaust gas temperature sensor circuit on bank 1 of your vehicle's engine.

Common Causes

  • Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors
  • Poor electrical connections
  • Defective exhaust gas temperature sensor
  • Unauthorized modifications to the exhaust system
  • Failed or failing PCM (rare)

Diagnosis

  1. Inspect wiring and connectors for damage or corrosion.
  2. Check electrical connections to ensure they are secure.
  3. Verify the exhaust gas temperature sensor is functioning properly.
  4. Ensure no unauthorized modifications have been made to the exhaust system.

Fixes

  • Replace damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors
  • Repair poor electrical connections
  • Replace the defective exhaust gas temperature sensor

FAQ

What does P2031 mean?

P2031 indicates a malfunction in the circuit of the second exhaust gas temperature (EGT) sensor on bank 1.

Is it safe to drive with P2031?

It is generally drivable, but monitor for any changes in performance or warning lights.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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