Credov

P1730 fault code: what it means

P1730: Problem in the A/T shift control system (Honda shift solenoid / clutch combination). Harsh or wrong shifts.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. shift solenoid sticking
  2. dirty ATF
  3. valve body fault

P1730 by make

Honda

Problem in the A/T shift control system (Honda shift solenoid / clutch combination). Harsh or wrong shifts.

Usual causes: shift solenoid sticking; dirty ATF; valve body fault

Suzuki

ECM/TCM torque signal failure. Auto shifts may be harsh.

Usual causes: wiring between ECM and TCM; TCM or ECM fault

Not sure what P1730 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.