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P1078 fault code: what it means

P1078: Exhaust valve timing control position sensor circuit fault. Exhaust VTC goes to default position; may run rough or lack power.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. exhaust cam position sensor
  2. wiring or connector fault
  3. debris on the camshaft signal pick-up
  4. sensor power supply 2 circuit fault

P1078 by make

Nissan

Exhaust valve timing control position sensor circuit fault. Exhaust VTC goes to default position; may run rough or lack power.

Usual causes: exhaust cam position sensor; wiring or connector fault; debris on the camshaft signal pick-up; sensor power supply 2 circuit fault

Not sure what P1078 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.