P0597 — Thermostat heater control circuit — open

Code P0597 is a standard OBD-II diagnostic trouble code: Thermostat heater control circuit — open.

In our record, P0597 is reported most often on Chevrolet and BMW vehicles , against engine and powertrain failure patterns , across 2013–2017 model years. Chevrolet alone accounts for 80% of them.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite P0597 across 5 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 P0597 5 patterns

2017 Chevrolet Volt

powertrain — EGR Valve Failure & F3UA Fuse Blowout

2017 Chevrolet Volt

engine — EGR Valve Failure – Sticking/Internal Short

2016 Chevrolet Volt

electrical — EGR Valve Failure (Electrical Short)

2014 BMW 528i

engine — Check Engine Warning Light with DTC P0597

2013 Chevrolet Sonic

engine — Acceleration surge, jolting, and rough running at idle

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 →