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P1D98 fault code: what it means

P1D98: Incorrect gear ratio, clutch B or D defective (9-speed Renegade). Slipping or harsh shifts; may need clutch repair if reflash does not fix.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. worn clutch B or D
  2. low fluid
  3. TCM software
  4. valve body

P1D98 by make

Jeep

Incorrect gear ratio, clutch B or D defective (9-speed Renegade). Slipping or harsh shifts; may need clutch repair if reflash does not fix.

Usual causes: worn clutch B or D; low fluid; TCM software; valve body

Not sure what P1D98 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.