Credov

P1618 fault code: what it means

P1618: Keyless start control module CAN circuit fault. Keyless start may fail.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. CAN wiring fault
  2. keyless start control module

P1618 by make

Suzuki

Keyless start control module CAN circuit fault. Keyless start may fail.

Usual causes: CAN wiring fault; keyless start control module

Volvo

Wiring fault between the AW gearbox computer and the engine computer. Limp mode and harsh shifts.

Usual causes: damaged wiring between TCM and ECM; corroded connector; module fault

Not sure what P1618 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.