P0344 fault code: what it means

P0344: Camshaft position sensor A (bank 1) signal intermittent. Hard starting or stalling possible.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

loose or corroded connector
failing cam sensor
chafed wiring

P0344 by make

BMW

Intake camshaft sensor synchronisation lost. Stalling or no-start possible.

Usual causes: faulty camshaft sensor; wiring fault; timing chain stretch

Honda

Camshaft position (CMP) sensor intermittent. Can cause stalling or hard starting.

Usual causes: CMP sensor; wiring or connector fault

Jeep

Camshaft position sensor intermittent, bank 1 sensor 1. On JK Wrangler FCA found the engine harness rubbing/loose at a retainer clip. Can cause stalling or long crank.

Usual causes: engine wiring harness chafe or loose retainer clip (JK Wrangler); cam sensor connector; failed cam sensor

Mercedes-Benz

Camshaft position sensor intermittent.

Usual causes: faulty camshaft sensor; oil in plug; wiring fault

Mini

Intake camshaft sensor synchronisation lost. Stalling or no-start possible.

Usual causes: faulty camshaft sensor; wiring fault; timing chain stretch

Porsche

Camshaft sensor signal erratic. With no other codes the camshaft sender wheel may be damaged.

Usual causes: damaged camshaft sender wheel; faulty camshaft sensor; wiring fault

What the repair usually costs

Crankshaft or camshaft position sensor replaceNZ$100–NZ$590 · A$100–A$580
Timing chain, tensioner and guides (4-cylinder)NZ$1,120–NZ$2,530 · A$1,160–A$2,570
Timing chains and tensioners (V6 / V8)NZ$1,890–NZ$4,080 · A$1,920–A$4,110
Glow plugs (diesel, set of 4)NZ$250–NZ$850 · A$250–A$850

Not sure what P0344 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.