P0031 — Oxygen sensor heater control circuit low (bank 1, sensor 1)

Code P0031 is a standard OBD-II diagnostic trouble code: Oxygen sensor heater control circuit low (bank 1, sensor 1).

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In our record, P0031 is reported most often on Chevrolet, Ford and Toyota vehicles , against electrical and engine failure patterns , across 2006–2017 model years.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite P0031 across 6 vehicle failure patterns. Diagnostic codes in complaints are reported by owners and are unverified — they point to where this code shows up, not a confirmed diagnosis. Open a page below for the full pattern (symptoms, mileage, repair costs owners cite).

Vehicles where owners report P0031 6 patterns

2017 Chevrolet Volt

powertrain — EGR Valve Failure & F3UA Fuse Blowout

2017 Chevrolet Volt

engine — EGR Valve Failure – Sticking/Internal Short

2017 Ford Escape

engine — Coolant Intrusion into Cylinders with Head Gasket Failure

2016 Chevrolet Volt

electrical — EGR Valve Failure (Electrical Short)

2013 Ford Escape

electrical — Stalling and power loss while driving

2006 Toyota Corolla

electrical — O2 Sensor Malfunction – Persistent Check Engine Light

Codes are pulled from what owners wrote in their NHTSA filings — they're allegations, not a shop diagnosis. Always confirm with a live scan. Browse all diagnostic codes →