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C1499 fault code: what it means

C1499: Rear drive module (RDM) motor position performance (Cherokee KL). Difficulty shifting out of 4-Low; FCA software update.

Chassis (brakes, steering, suspension) · Costly if missed

Usual causes, most likely first

  1. RDM/DTCM software
  2. RDM motor actuator
  3. wiring

C1499 by make

Jeep

Rear drive module (RDM) motor position performance (Cherokee KL). Difficulty shifting out of 4-Low; FCA software update.

Usual causes: RDM/DTCM software; RDM motor actuator; wiring

Not sure what C1499 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.