Error code

OBD2 P0732

OBD2P0732
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Gear 2 Incorrect Ratio.

Severity

moderateCan be driven, but performance will likely suffer and the issue may worsen over time.

Summary

P0732 indicates that the gear ratio for second gear in your transmission is incorrect. This issue can affect how smoothly and efficiently your vehicle shifts gears.

Symptoms

  • Lack of power
  • Slow speeds
  • Transmission slipping
  • Erratic shifting
  • Harsh shifts

Common Causes

  • Low transmission fluid level
  • Dirty transmission fluid
  • Transmission oil leak
  • Transmission clutch problems
  • Low oil pressure
  • Faulty transmission control module (TCM)
  • Damaged or dirty speed sensors
  • Corroded connections or pins
  • Wiring issues

Diagnosis

  1. Check for other transmission codes that might need addressing first.
  2. Inspect and top up transmission fluid level.
  3. Visually inspect the transmission housing for damage or leaks.
  4. Test oil pressure in each gear to ensure it meets specifications.
  5. Check resistance values of speed sensors using a multimeter.
  6. Inspect wiring circuits for continuity, shorts, and opens.
  7. Back probe TCM connector to check electrical values.

Fixes

  • Replace faulty transmission components or repair damaged wiring.

FAQ

What should I do if my car has P0732?

Start by checking the transmission fluid level and condition. If that doesn't resolve the issue, proceed with more detailed diagnostics such as testing oil pressure and speed sensors.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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