P0343 fault code: what it means

P0343: Camshaft position sensor A (bank 1) signal high.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

open circuit or short to voltage in the sensor wiring
failed cam sensor
oil in the connector

P0343 by make

Audi

Camshaft position sensor (G40) signal is too high. Long cranking or stalling is common.

Usual causes: faulty camshaft position sensor (G40); wiring short at G40; cam timing out (chain or belt)

Mercedes-Benz

Camshaft position sensor circuit high.

Usual causes: faulty camshaft sensor; oil wicking into the sensor plug; wiring fault

Skoda

Camshaft position sensor (G40) signal is too high. Long cranking or stalling is common.

Usual causes: faulty camshaft position sensor (G40); wiring short at G40; cam timing out (chain or belt)

Volkswagen

Camshaft position sensor (G40) signal is too high. Long cranking or stalling is common.

Usual causes: faulty camshaft position sensor (G40); wiring short at G40; cam timing out (chain or belt)

What the repair usually costs

Crankshaft or camshaft position sensor replaceNZ$100–NZ$590 · A$100–A$580

Not sure what P0343 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.