Error code
OBD2 P0733
OBD2P0733
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Gear 3 Incorrect Ratio.
Severity
moderateCan drive but may experience shifting problems and reduced performance.
Summary
P0733 indicates an incorrect gear ratio in third gear of your transmission. This can affect how smoothly and efficiently your vehicle shifts gears.
Symptoms
- Lack of power
- Transmission slipping
- Harsh or erratic shifting
Common Causes
- Low transmission fluid level
- Dirty transmission fluid
- Wiring issues (corrosion, chafed, melted)
- Faulty speed sensor
- Transmission mechanical fault
Diagnosis
- Check transmission fluid level and condition
- Inspect for leaks or damage to the transmission housing
- Test oil pressure in the transmission
- Inspect speed sensors and wiring
Fixes
- Replace faulty sensor or repair wiring issues
FAQ
What should I do if my car has P0733?
Start by checking your transmission fluid level and condition. If the issue persists, inspect for leaks or damage to the transmission housing and test oil pressure.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P0700Transmission Control System (MIL Request)
- P0701Transmission Control System Range/Performance
- P0702Transmission Control System Electrical
- P0703Brake Switch 'B' Circuit
- P0704Clutch Switch Input Circuit Malfunction
- P0705Transmission Range Sensor Circuit Malfunction (PRNDL Input)
- P0706Transmission Range Sensor Circuit Range/Performance
- P0707Transmission Range Sensor Circuit Low
- P0708Transmission Range Sensor Circuit High
- P0709Transmission Range Sensor Circuit Intermittent
- P0710Transmission Fluid Temperature Sensor 'A' Circuit
- P0711Transmission Fluid Temperature Sensor 'A' Circuit Range/Performance