Code
P0733
Generic
P — Powertrain
Gear 3 Incorrect Ratio
Views:
UK: 36
EN: 46
RU: 59
AI status
Completed
Completed
100%
Causes
- Low or degraded automatic transmission fluid (ATF) level or wrong fluid type
- Internal hydraulic pressure loss (worn pump, leaking seals, clogged passages)
- Worn or damaged clutch pack, band, or planetary gearset for 3rd gear
- Stuck or failed shift solenoid or valve in the valve body
- Faulty input (turbine) or output speed sensor, or sensor circuit issues
- Shift linkage/cable misadjustment or selector mechanism fault
Symptoms
- Malfunction Indicator Lamp (MIL) / Check Engine Light on
- Erratic shifting or failure to hold 3rd gear
- Transmission slips or delayed engagement in 3rd gear
- Reduced drivability or limp-in mode depending on vehicle
- Unusual transmission noise (grinding/whine) under load
- Possible inability to accelerate smoothly when 3rd gear is commanded
What to check
- Read and record all stored DTCs and freeze frame data with a scan tool
- Check ATF level, color, smell and condition; verify correct fluid type
- Scan live data: commanded gear, actual gear, input and output shaft speeds, line pressure (if available), solenoid status
- Inspect wiring and connectors for input/output speed sensors and solenoids for damage, corrosion or loose pins
- Verify shift linkage/cable and selector position adjustment
- Road test while monitoring live data to reproduce fault and confirm ratio error
Signal parameters
- Input (turbine) speed sensor: rpm (should vary with engine speed when engaged)
- Output (vehicle) speed sensor: rpm or km/h (must increase with vehicle speed)
- Calculated gear ratio: input_speed / output_speed (should match manufacturer's 3rd-gear ratio within spec)
- Expected 3rd gear ratio: manufacturer specified value (compare via scan tool)
- Transmission line pressure: psi or kPa (should be within spec during apply and shift)
- Shift solenoid duty/command: percentage or ON/OFF state (reflects TCM commands)
Diagnostic algorithm
- Retrieve codes and freeze frame; note vehicle conditions when code set (speed, RPM, temp).
- Visually inspect ATF level, color and smell; top or replace fluid if low or contaminated. Use manufacturer fluid.
- Perform a road test with a capable scan tool and record input/output speeds, commanded gear and calculated ratio. Confirm ratio error occurs in 3rd gear.
- Check electrical circuits: back-probe/check continuity and reference voltage for input/output speed sensors and transmission solenoids; wiggle test connectors while monitoring live data for intermittent faults.
- Verify shift linkage/cable adjustment and park/neutral switch operation; correct any misadjustment.
- Command solenoids (if scan tool allows) and verify operation and changes in pressure/ration; substitute known-good solenoid if suspect.
- Measure line pressure with a gauge (service manual procedure) to confirm hydraulic apply pressure in 3rd gear and during shift. Compare with spec.
- If hydraulic pressure is low or fluctuating, inspect pump, valve body, filter and check for internal leaks or worn clutches. Remove pan and inspect for metal debris or burnt friction material.
- If electrical and hydraulic systems test good, suspect internal mechanical damage (clutch pack, band, planetary gearset) and consider partial rebuild or transmission removal for internal inspection.
- After repair, clear codes and verify fix with a controlled road test and scan tool verification of correct 3rd gear ratio under load.
Likely causes
- Worn 3rd gear clutch pack or band allowing slip under load
- Faulty or stuck shift solenoid controlling 3rd gear
- Low line pressure due to pump wear or external/internal leakage
- Faulty input or output speed sensor or intermittent wiring/connectors
- Contaminated/clogged filter or passages in valve body preventing proper apply
- Incorrect transmission fluid type or contaminated fluid causing poor friction
Fault status
Status
Powertrain MIL illuminated. TCM has stored a P0733 code indicating measured 3rd-gear ratio does not match expected value. Freeze frame and live data may show mismatched input/output speeds, commanded gear, and transmission temperature.
Repair difficulty: Hard
Diagnostic time: 1.0 - 4.0 hours
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Code
P0733
GWM
P — Powertrain
- 3 gear is not adjusted correctly
Views:
UK: 19
EN: 28
RU: 31
AI status
Completed
Completed
100%
Causes
- Low or degraded automatic transmission fluid (ATF) level or wrong fluid type
- Internal hydraulic pressure loss (worn pump, leaking seals, clogged passages)
- Worn or damaged clutch pack, band, or planetary gearset for 3rd gear
- Stuck or failed shift solenoid or valve in the valve body
- Faulty input (turbine) or output speed sensor, or sensor circuit issues
- Shift linkage/cable misadjustment or selector mechanism fault
Symptoms
- Malfunction Indicator Lamp (MIL) / Check Engine Light on
- Erratic shifting or failure to hold 3rd gear
- Transmission slips or delayed engagement in 3rd gear
- Reduced drivability or limp-in mode depending on vehicle
- Unusual transmission noise (grinding/whine) under load
- Possible inability to accelerate smoothly when 3rd gear is commanded
What to check
- Read and record all stored DTCs and freeze frame data with a scan tool
- Check ATF level, color, smell and condition; verify correct fluid type
- Scan live data: commanded gear, actual gear, input and output shaft speeds, line pressure (if available), solenoid status
- Inspect wiring and connectors for input/output speed sensors and solenoids for damage, corrosion or loose pins
- Verify shift linkage/cable and selector position adjustment
- Road test while monitoring live data to reproduce fault and confirm ratio error
Signal parameters
- Input (turbine) speed sensor: rpm (should vary with engine speed when engaged)
- Output (vehicle) speed sensor: rpm or km/h (must increase with vehicle speed)
- Calculated gear ratio: input_speed / output_speed (should match manufacturer's 3rd-gear ratio within spec)
- Expected 3rd gear ratio: manufacturer specified value (compare via scan tool)
- Transmission line pressure: psi or kPa (should be within spec during apply and shift)
- Shift solenoid duty/command: percentage or ON/OFF state (reflects TCM commands)
Diagnostic algorithm
- Retrieve codes and freeze frame; note vehicle conditions when code set (speed, RPM, temp).
- Visually inspect ATF level, color and smell; top or replace fluid if low or contaminated. Use manufacturer fluid.
- Perform a road test with a capable scan tool and record input/output speeds, commanded gear and calculated ratio. Confirm ratio error occurs in 3rd gear.
- Check electrical circuits: back-probe/check continuity and reference voltage for input/output speed sensors and transmission solenoids; wiggle test connectors while monitoring live data for intermittent faults.
- Verify shift linkage/cable adjustment and park/neutral switch operation; correct any misadjustment.
- Command solenoids (if scan tool allows) and verify operation and changes in pressure/ration; substitute known-good solenoid if suspect.
- Measure line pressure with a gauge (service manual procedure) to confirm hydraulic apply pressure in 3rd gear and during shift. Compare with spec.
- If hydraulic pressure is low or fluctuating, inspect pump, valve body, filter and check for internal leaks or worn clutches. Remove pan and inspect for metal debris or burnt friction material.
- If electrical and hydraulic systems test good, suspect internal mechanical damage (clutch pack, band, planetary gearset) and consider partial rebuild or transmission removal for internal inspection.
- After repair, clear codes and verify fix with a controlled road test and scan tool verification of correct 3rd gear ratio under load.
Likely causes
- Worn 3rd gear clutch pack or band allowing slip under load
- Faulty or stuck shift solenoid controlling 3rd gear
- Low line pressure due to pump wear or external/internal leakage
- Faulty input or output speed sensor or intermittent wiring/connectors
- Contaminated/clogged filter or passages in valve body preventing proper apply
- Incorrect transmission fluid type or contaminated fluid causing poor friction
Fault status
Status
Powertrain MIL illuminated. TCM has stored a P0733 code indicating measured 3rd-gear ratio does not match expected value. Freeze frame and live data may show mismatched input/output speeds, commanded gear, and transmission temperature.
Repair difficulty: Hard
Diagnostic time: 1.0 - 4.0 hours
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Code
P0733
HUMMER
P — Powertrain
Incorrect 3rd Gear Ratio
Views:
UK: 23
EN: 35
RU: 51
AI status
Completed
Completed
100%
Causes
- Low or degraded automatic transmission fluid (ATF) level or wrong fluid type
- Internal hydraulic pressure loss (worn pump, leaking seals, clogged passages)
- Worn or damaged clutch pack, band, or planetary gearset for 3rd gear
- Stuck or failed shift solenoid or valve in the valve body
- Faulty input (turbine) or output speed sensor, or sensor circuit issues
- Shift linkage/cable misadjustment or selector mechanism fault
Symptoms
- Malfunction Indicator Lamp (MIL) / Check Engine Light on
- Erratic shifting or failure to hold 3rd gear
- Transmission slips or delayed engagement in 3rd gear
- Reduced drivability or limp-in mode depending on vehicle
- Unusual transmission noise (grinding/whine) under load
- Possible inability to accelerate smoothly when 3rd gear is commanded
What to check
- Read and record all stored DTCs and freeze frame data with a scan tool
- Check ATF level, color, smell and condition; verify correct fluid type
- Scan live data: commanded gear, actual gear, input and output shaft speeds, line pressure (if available), solenoid status
- Inspect wiring and connectors for input/output speed sensors and solenoids for damage, corrosion or loose pins
- Verify shift linkage/cable and selector position adjustment
- Road test while monitoring live data to reproduce fault and confirm ratio error
Signal parameters
- Input (turbine) speed sensor: rpm (should vary with engine speed when engaged)
- Output (vehicle) speed sensor: rpm or km/h (must increase with vehicle speed)
- Calculated gear ratio: input_speed / output_speed (should match manufacturer's 3rd-gear ratio within spec)
- Expected 3rd gear ratio: manufacturer specified value (compare via scan tool)
- Transmission line pressure: psi or kPa (should be within spec during apply and shift)
- Shift solenoid duty/command: percentage or ON/OFF state (reflects TCM commands)
Diagnostic algorithm
- Retrieve codes and freeze frame; note vehicle conditions when code set (speed, RPM, temp).
- Visually inspect ATF level, color and smell; top or replace fluid if low or contaminated. Use manufacturer fluid.
- Perform a road test with a capable scan tool and record input/output speeds, commanded gear and calculated ratio. Confirm ratio error occurs in 3rd gear.
- Check electrical circuits: back-probe/check continuity and reference voltage for input/output speed sensors and transmission solenoids; wiggle test connectors while monitoring live data for intermittent faults.
- Verify shift linkage/cable adjustment and park/neutral switch operation; correct any misadjustment.
- Command solenoids (if scan tool allows) and verify operation and changes in pressure/ration; substitute known-good solenoid if suspect.
- Measure line pressure with a gauge (service manual procedure) to confirm hydraulic apply pressure in 3rd gear and during shift. Compare with spec.
- If hydraulic pressure is low or fluctuating, inspect pump, valve body, filter and check for internal leaks or worn clutches. Remove pan and inspect for metal debris or burnt friction material.
- If electrical and hydraulic systems test good, suspect internal mechanical damage (clutch pack, band, planetary gearset) and consider partial rebuild or transmission removal for internal inspection.
- After repair, clear codes and verify fix with a controlled road test and scan tool verification of correct 3rd gear ratio under load.
Likely causes
- Worn 3rd gear clutch pack or band allowing slip under load
- Faulty or stuck shift solenoid controlling 3rd gear
- Low line pressure due to pump wear or external/internal leakage
- Faulty input or output speed sensor or intermittent wiring/connectors
- Contaminated/clogged filter or passages in valve body preventing proper apply
- Incorrect transmission fluid type or contaminated fluid causing poor friction
Fault status
Status
Powertrain MIL illuminated. TCM has stored a P0733 code indicating measured 3rd-gear ratio does not match expected value. Freeze frame and live data may show mismatched input/output speeds, commanded gear, and transmission temperature.
Repair difficulty: Hard
Diagnostic time: 1.0 - 4.0 hours
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Code
P0733
LAND ROVER
P — Powertrain
Incorrect gear ratio 3
Views:
UK: 22
EN: 34
RU: 47
AI status
Completed
Completed
100%
Causes
- Low or degraded automatic transmission fluid (ATF) level or wrong fluid type
- Internal hydraulic pressure loss (worn pump, leaking seals, clogged passages)
- Worn or damaged clutch pack, band, or planetary gearset for 3rd gear
- Stuck or failed shift solenoid or valve in the valve body
- Faulty input (turbine) or output speed sensor, or sensor circuit issues
- Shift linkage/cable misadjustment or selector mechanism fault
Symptoms
- Malfunction Indicator Lamp (MIL) / Check Engine Light on
- Erratic shifting or failure to hold 3rd gear
- Transmission slips or delayed engagement in 3rd gear
- Reduced drivability or limp-in mode depending on vehicle
- Unusual transmission noise (grinding/whine) under load
- Possible inability to accelerate smoothly when 3rd gear is commanded
What to check
- Read and record all stored DTCs and freeze frame data with a scan tool
- Check ATF level, color, smell and condition; verify correct fluid type
- Scan live data: commanded gear, actual gear, input and output shaft speeds, line pressure (if available), solenoid status
- Inspect wiring and connectors for input/output speed sensors and solenoids for damage, corrosion or loose pins
- Verify shift linkage/cable and selector position adjustment
- Road test while monitoring live data to reproduce fault and confirm ratio error
Signal parameters
- Input (turbine) speed sensor: rpm (should vary with engine speed when engaged)
- Output (vehicle) speed sensor: rpm or km/h (must increase with vehicle speed)
- Calculated gear ratio: input_speed / output_speed (should match manufacturer's 3rd-gear ratio within spec)
- Expected 3rd gear ratio: manufacturer specified value (compare via scan tool)
- Transmission line pressure: psi or kPa (should be within spec during apply and shift)
- Shift solenoid duty/command: percentage or ON/OFF state (reflects TCM commands)
Diagnostic algorithm
- Retrieve codes and freeze frame; note vehicle conditions when code set (speed, RPM, temp).
- Visually inspect ATF level, color and smell; top or replace fluid if low or contaminated. Use manufacturer fluid.
- Perform a road test with a capable scan tool and record input/output speeds, commanded gear and calculated ratio. Confirm ratio error occurs in 3rd gear.
- Check electrical circuits: back-probe/check continuity and reference voltage for input/output speed sensors and transmission solenoids; wiggle test connectors while monitoring live data for intermittent faults.
- Verify shift linkage/cable adjustment and park/neutral switch operation; correct any misadjustment.
- Command solenoids (if scan tool allows) and verify operation and changes in pressure/ration; substitute known-good solenoid if suspect.
- Measure line pressure with a gauge (service manual procedure) to confirm hydraulic apply pressure in 3rd gear and during shift. Compare with spec.
- If hydraulic pressure is low or fluctuating, inspect pump, valve body, filter and check for internal leaks or worn clutches. Remove pan and inspect for metal debris or burnt friction material.
- If electrical and hydraulic systems test good, suspect internal mechanical damage (clutch pack, band, planetary gearset) and consider partial rebuild or transmission removal for internal inspection.
- After repair, clear codes and verify fix with a controlled road test and scan tool verification of correct 3rd gear ratio under load.
Likely causes
- Worn 3rd gear clutch pack or band allowing slip under load
- Faulty or stuck shift solenoid controlling 3rd gear
- Low line pressure due to pump wear or external/internal leakage
- Faulty input or output speed sensor or intermittent wiring/connectors
- Contaminated/clogged filter or passages in valve body preventing proper apply
- Incorrect transmission fluid type or contaminated fluid causing poor friction
Fault status
Status
Powertrain MIL illuminated. TCM has stored a P0733 code indicating measured 3rd-gear ratio does not match expected value. Freeze frame and live data may show mismatched input/output speeds, commanded gear, and transmission temperature.
Repair difficulty: Hard
Diagnostic time: 1.0 - 4.0 hours
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Code
P0733
MERCEDES-BENZ
P — Powertrain
Gear 3 Incorrect ratio
Views:
UK: 28
EN: 41
RU: 58
AI status
Completed
Completed
100%
Causes
- Low or degraded automatic transmission fluid (ATF) level or wrong fluid type
- Internal hydraulic pressure loss (worn pump, leaking seals, clogged passages)
- Worn or damaged clutch pack, band, or planetary gearset for 3rd gear
- Stuck or failed shift solenoid or valve in the valve body
- Faulty input (turbine) or output speed sensor, or sensor circuit issues
- Shift linkage/cable misadjustment or selector mechanism fault
Symptoms
- Malfunction Indicator Lamp (MIL) / Check Engine Light on
- Erratic shifting or failure to hold 3rd gear
- Transmission slips or delayed engagement in 3rd gear
- Reduced drivability or limp-in mode depending on vehicle
- Unusual transmission noise (grinding/whine) under load
- Possible inability to accelerate smoothly when 3rd gear is commanded
What to check
- Read and record all stored DTCs and freeze frame data with a scan tool
- Check ATF level, color, smell and condition; verify correct fluid type
- Scan live data: commanded gear, actual gear, input and output shaft speeds, line pressure (if available), solenoid status
- Inspect wiring and connectors for input/output speed sensors and solenoids for damage, corrosion or loose pins
- Verify shift linkage/cable and selector position adjustment
- Road test while monitoring live data to reproduce fault and confirm ratio error
Signal parameters
- Input (turbine) speed sensor: rpm (should vary with engine speed when engaged)
- Output (vehicle) speed sensor: rpm or km/h (must increase with vehicle speed)
- Calculated gear ratio: input_speed / output_speed (should match manufacturer's 3rd-gear ratio within spec)
- Expected 3rd gear ratio: manufacturer specified value (compare via scan tool)
- Transmission line pressure: psi or kPa (should be within spec during apply and shift)
- Shift solenoid duty/command: percentage or ON/OFF state (reflects TCM commands)
Diagnostic algorithm
- Retrieve codes and freeze frame; note vehicle conditions when code set (speed, RPM, temp).
- Visually inspect ATF level, color and smell; top or replace fluid if low or contaminated. Use manufacturer fluid.
- Perform a road test with a capable scan tool and record input/output speeds, commanded gear and calculated ratio. Confirm ratio error occurs in 3rd gear.
- Check electrical circuits: back-probe/check continuity and reference voltage for input/output speed sensors and transmission solenoids; wiggle test connectors while monitoring live data for intermittent faults.
- Verify shift linkage/cable adjustment and park/neutral switch operation; correct any misadjustment.
- Command solenoids (if scan tool allows) and verify operation and changes in pressure/ration; substitute known-good solenoid if suspect.
- Measure line pressure with a gauge (service manual procedure) to confirm hydraulic apply pressure in 3rd gear and during shift. Compare with spec.
- If hydraulic pressure is low or fluctuating, inspect pump, valve body, filter and check for internal leaks or worn clutches. Remove pan and inspect for metal debris or burnt friction material.
- If electrical and hydraulic systems test good, suspect internal mechanical damage (clutch pack, band, planetary gearset) and consider partial rebuild or transmission removal for internal inspection.
- After repair, clear codes and verify fix with a controlled road test and scan tool verification of correct 3rd gear ratio under load.
Likely causes
- Worn 3rd gear clutch pack or band allowing slip under load
- Faulty or stuck shift solenoid controlling 3rd gear
- Low line pressure due to pump wear or external/internal leakage
- Faulty input or output speed sensor or intermittent wiring/connectors
- Contaminated/clogged filter or passages in valve body preventing proper apply
- Incorrect transmission fluid type or contaminated fluid causing poor friction
Fault status
Status
Powertrain MIL illuminated. TCM has stored a P0733 code indicating measured 3rd-gear ratio does not match expected value. Freeze frame and live data may show mismatched input/output speeds, commanded gear, and transmission temperature.
Repair difficulty: Hard
Diagnostic time: 1.0 - 4.0 hours
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Code
P0733
MITSUBISHI
P — Powertrain
Gear shift 3rd incomplete
Views:
UK: 20
EN: 36
RU: 48
AI status
Completed
Completed
100%
Causes
- Low or degraded automatic transmission fluid (ATF) level or wrong fluid type
- Internal hydraulic pressure loss (worn pump, leaking seals, clogged passages)
- Worn or damaged clutch pack, band, or planetary gearset for 3rd gear
- Stuck or failed shift solenoid or valve in the valve body
- Faulty input (turbine) or output speed sensor, or sensor circuit issues
- Shift linkage/cable misadjustment or selector mechanism fault
Symptoms
- Malfunction Indicator Lamp (MIL) / Check Engine Light on
- Erratic shifting or failure to hold 3rd gear
- Transmission slips or delayed engagement in 3rd gear
- Reduced drivability or limp-in mode depending on vehicle
- Unusual transmission noise (grinding/whine) under load
- Possible inability to accelerate smoothly when 3rd gear is commanded
What to check
- Read and record all stored DTCs and freeze frame data with a scan tool
- Check ATF level, color, smell and condition; verify correct fluid type
- Scan live data: commanded gear, actual gear, input and output shaft speeds, line pressure (if available), solenoid status
- Inspect wiring and connectors for input/output speed sensors and solenoids for damage, corrosion or loose pins
- Verify shift linkage/cable and selector position adjustment
- Road test while monitoring live data to reproduce fault and confirm ratio error
Signal parameters
- Input (turbine) speed sensor: rpm (should vary with engine speed when engaged)
- Output (vehicle) speed sensor: rpm or km/h (must increase with vehicle speed)
- Calculated gear ratio: input_speed / output_speed (should match manufacturer's 3rd-gear ratio within spec)
- Expected 3rd gear ratio: manufacturer specified value (compare via scan tool)
- Transmission line pressure: psi or kPa (should be within spec during apply and shift)
- Shift solenoid duty/command: percentage or ON/OFF state (reflects TCM commands)
Diagnostic algorithm
- Retrieve codes and freeze frame; note vehicle conditions when code set (speed, RPM, temp).
- Visually inspect ATF level, color and smell; top or replace fluid if low or contaminated. Use manufacturer fluid.
- Perform a road test with a capable scan tool and record input/output speeds, commanded gear and calculated ratio. Confirm ratio error occurs in 3rd gear.
- Check electrical circuits: back-probe/check continuity and reference voltage for input/output speed sensors and transmission solenoids; wiggle test connectors while monitoring live data for intermittent faults.
- Verify shift linkage/cable adjustment and park/neutral switch operation; correct any misadjustment.
- Command solenoids (if scan tool allows) and verify operation and changes in pressure/ration; substitute known-good solenoid if suspect.
- Measure line pressure with a gauge (service manual procedure) to confirm hydraulic apply pressure in 3rd gear and during shift. Compare with spec.
- If hydraulic pressure is low or fluctuating, inspect pump, valve body, filter and check for internal leaks or worn clutches. Remove pan and inspect for metal debris or burnt friction material.
- If electrical and hydraulic systems test good, suspect internal mechanical damage (clutch pack, band, planetary gearset) and consider partial rebuild or transmission removal for internal inspection.
- After repair, clear codes and verify fix with a controlled road test and scan tool verification of correct 3rd gear ratio under load.
Likely causes
- Worn 3rd gear clutch pack or band allowing slip under load
- Faulty or stuck shift solenoid controlling 3rd gear
- Low line pressure due to pump wear or external/internal leakage
- Faulty input or output speed sensor or intermittent wiring/connectors
- Contaminated/clogged filter or passages in valve body preventing proper apply
- Incorrect transmission fluid type or contaminated fluid causing poor friction
Fault status
Status
Powertrain MIL illuminated. TCM has stored a P0733 code indicating measured 3rd-gear ratio does not match expected value. Freeze frame and live data may show mismatched input/output speeds, commanded gear, and transmission temperature.
Repair difficulty: Hard
Diagnostic time: 1.0 - 4.0 hours
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email