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P0328 fault code: what it means

P0328: Knock sensor 1 circuit high input. Timing is retarded, so the engine feels flat.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. open circuit in knock sensor wiring
  2. failed knock sensor
  3. corroded connector

P0328 by make

Audi

Knock sensor 1 (G61) signal too high. Power loss and rough running are possible.

Usual causes: knock sensor wiring short or open; knock sensor not torqued correctly; faulty knock sensor

Mazda

Knock sensor circuit high (SKYACTIV-G). Timing is retarded for safety: less power and economy.

Usual causes: knock sensor faulty; wiring open or short to power

Mini

Knock sensor 1 circuit high.

Usual causes: faulty knock sensor; wiring short

Nissan

Knock sensor circuit high. Engine may run retarded timing with less power and higher fuel use.

Usual causes: knock sensor faulty; wiring or connector fault

Skoda

Knock sensor 1 (G61) signal too high. Power loss and rough running are possible.

Usual causes: knock sensor wiring short or open; knock sensor not torqued correctly; faulty knock sensor

Subaru

Knock sensor circuit high. Poor performance and possible knocking.

Usual causes: knock sensor (often loose or cracked); wiring fault

Volkswagen

Knock sensor 1 (G61) signal too high. Power loss and rough running are possible.

Usual causes: knock sensor wiring short or open; knock sensor not torqued correctly; faulty knock sensor

Not sure what P0328 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.