P1318 fault code: what it means

P1318: ABS rough-road signal line stuck at battery volts.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

wiring fault
ABS module fault

P1318 by make

Land Rover

ABS rough-road signal line stuck at battery volts.

Usual causes: wiring fault; ABS module fault

Porsche

Cylinder 6 misfire, emission relevant.

Usual causes: fouled or wrong spark plug; cracked ignition coil; loose contacts

What the repair usually costs

ABS pump / control module replacement (reman exchange or new)NZ$850–NZ$3,210 · A$780–A$2,880
Coil packs and spark plugs (4-cylinder)NZ$280–NZ$1,000 · A$260–A$920
Coil packs and spark plugs (V6 / V8)NZ$490–NZ$1,780 · A$480–A$1,710

Not sure what P1318 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.