BMW DTC P099D – Shift Solenoid ‘H’ Control Circuit Range/Performance
DTC P099D meaning on BMW
The DTC P099D code on a BMW indicates an issue with the Shift Solenoid ‘H’ Control Circuit Range/Performance. This means that the vehicle’s computer has detected a problem with the electrical circuit that controls the operation of the Shift Solenoid ‘H’.
BMW DTC P099D symptoms
Symptoms of the DTC P099D code on a BMW may include harsh shifting, delayed shifting, transmission slipping, or the transmission not shifting at all. The vehicle may also experience decreased fuel efficiency and overall performance.
BMW DTC P099D causes
The most common causes of the DTC P099D code on a BMW include a faulty Shift Solenoid ‘H’, damaged wiring or connectors in the control circuit, low transmission fluid levels, or a malfunctioning transmission control module.
BMW DTC P099D seriousness
Ignoring the DTC P099D code on a BMW can lead to further damage to the transmission system, potentially resulting in costly repairs. It is important to address this issue promptly to prevent more severe transmission problems.
How to diagnose DTC P099D on BMW
To diagnose the DTC P099D code on a BMW, a mechanic will typically use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer. They will then perform a visual inspection of the Shift Solenoid ‘H’ and its wiring, as well as check the transmission fluid level and condition.
How to fix DTC P099D on BMW
Fixing the DTC P099D code on a BMW may involve replacing the Shift Solenoid ‘H’, repairing or replacing damaged wiring or connectors, topping up the transmission fluid, or reprogramming the transmission control module. It is recommended to have this repair done by a qualified mechanic.
How to erase DTC P099D on BMW
Once the underlying issue causing the DTC P099D code on a BMW has been resolved, the code can be cleared using a diagnostic scanner. This will reset the vehicle’s computer and turn off the Check Engine Light. It is important to ensure that the repair has been successful before clearing the code.
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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