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P1709 fault code: what it means

P1709: Problem in transmission gear selection switch circuit.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. gear selection (range) switch
  2. wiring fault

P1709 by make

Honda

Problem in transmission gear selection switch circuit.

Usual causes: gear selection (range) switch; wiring fault

Suzuki

TCM coolant temperature / barometric pressure signal fault.

Usual causes: ECT or BARO signal; wiring fault; TCM or ECM

Not sure what P1709 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.