BMW DTC P0733 – Gear 3 Incorrect Ratio
DTC P0733 meaning on BMW
The DTC P0733 code on a BMW indicates that the transmission control module has detected an incorrect gear ratio in the third gear. This means that the transmission is not shifting properly into the correct gear, leading to potential drivability issues.
BMW DTC P0733 symptoms
Symptoms of a DTC P0733 on a BMW may include harsh or delayed shifting, slipping gears, poor acceleration, decreased fuel efficiency, and the transmission staying in one gear. The vehicle may also exhibit a noticeable decrease in performance.
BMW DTC P0733 causes
The most common causes of a DTC P0733 on a BMW include low transmission fluid levels, dirty or contaminated transmission fluid, a faulty transmission solenoid, a malfunctioning transmission valve body, or internal transmission damage.
BMW DTC P0733 seriousness
Ignoring a DTC P0733 on a BMW can lead to further damage to the transmission and potentially result in complete transmission failure. It is important to address this issue promptly to prevent costly repairs and ensure the safety and performance of the vehicle.
How to diagnose DTC P0733 on BMW
To diagnose a DTC P0733 on a BMW, a mechanic will typically start by using a diagnostic scanner to retrieve the trouble codes stored in the transmission control module. They will then perform a visual inspection of the transmission fluid level and condition, followed by a road test to observe the shifting behavior. Further testing may involve checking the transmission solenoids, valve body, and internal components for any signs of wear or damage.
How to fix DTC P0733 on BMW
Fixing a DTC P0733 on a BMW may involve topping up or replacing the transmission fluid, cleaning or replacing the transmission solenoid, servicing or replacing the transmission valve body, or repairing any internal transmission damage. It is recommended to consult with a qualified mechanic or transmission specialist to accurately diagnose and repair the issue.
How to erase DTC P0733 on BMW
Once the underlying issue causing the DTC P0733 on a BMW has been resolved, the trouble code can be cleared using a diagnostic scanner. This will reset the transmission control module and turn off the Check Engine Light. It is important to ensure that the repair has been successful before clearing the code to prevent it from reoccurring.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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