P0325 — Knock sensor 1 circuit (bank 1)

Code P0325 is a standard OBD-II diagnostic trouble code: Knock sensor 1 circuit (bank 1).

In our record, P0325 is reported most often on Chevrolet, Buick and Kia vehicles , against engine and powertrain failure patterns , across 2006–2024 model years.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite P0325 across 9 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 P0325 9 patterns

2024 Chevrolet Trax

engine — Rod bearing failure / internal engine destruction

2019 Buick Encore

engine — Knock sensor and intake manifold PCV system failure

2019 Chevrolet Malibu

powertrain — Transmission loss of power and delayed acceleration

2017 Chevrolet Cruze

engine — Knock sensor failure and false low-oil warnings

2017 Chevrolet Cruze

powertrain — Piston cracking / Low-Speed Pre-Ignition (LSPI)

2013 Kia Optima

engine — Engine seizure / catastrophic failure

2010 GMC Terrain

powertrain — Transmission failure with loss of drive

2007 Honda Accord

powertrain — Knock Sensor Malfunction (P0325)

2006 Ford Freestyle

electrical — Electronic throttle body malfunction—surging, lunging, stall, loss of acceleration

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 →