An OBD-II code is designed to alert you about the potential problems your vehicle may have. For you to resolve it, you need to know what the code means.
If you’re having trouble figuring out what a P0035 code means and how to clear it, continue reading. Learn more about code P0035, the symptoms you should look out for, and the code’s possible triggers.
Diagnostic trouble code (DTC) P0035 stands for “Turbocharger/ Supercharger Bypass Valve “A” Control Circuit High.” This code is stored when the powertrain control module(PCM) perceives a problem with the turbocharger (or supercharger) bypass valve or its circuit.
Once the P0035 code is stored, your vehicle may enter the “limp home mode” that limits the power your engine can exert to protect other components from potentially being damaged.
Turbocharged engines have a bypass valve (also known as a compressor bypass valve). When the throttle is closed rapidly, the bypass valve prevents excess pressure from building up and traveling back to the turbo’s compressor.
Supercharged engines also have a bypass valve. In a supercharged engine, the bypass valve is used to control boost pressure by routing air directly to the intake manifold.
On most vehicles, the bypass valve is controlled by the PCM. When the PCM detects a problem with the bypass valve or the valve’s control circuit, it may set code P0035.
Make sure you have sufficient technical knowledge about forced induction before you attempt a DIY fix for P0035.
Note: The definition of code P0035 may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.
P0035 is a generic code, so it can have several triggers. Here are the most common:
Depending on the severity of the issue, other related DTCs may also be stored. For code P0035, codes P0034, P0033, P0234, and P0235 may also be set. Generally, you may notice the following symptoms if your vehicle has a P0035 trouble code:
Error code P0035 appears across several makes and models. However, its diagnosis and repair steps vary depending on the vehicle’s make and model.
As this is a complicated code, you should refer to a vehicle-specific repair manualfor diagnostic strategies. If you’re not well-versed in auto repair, it’s best to leave this matter to a mechanic or technician.
Like most OBD-II codes, P0035 shares similar causes and symptoms with other error codes. However, it cannot be resolved with a universal solution.
Code P0035 can be triggered by anything from PCM issues to a faulty turbocharger/ supercharger bypass valve, so you must do your research thoroughly. It’s best to leave repairs to the experts if you aren’t confident in your automotive repair skills.
If you’re set on resolving this code yourself, only use credible online auto repair sources for guidance. For example, an ALLDATA subscription can provide you with detailed factory repair information that you can use to resolve issues in your car.
As mentioned, one of the best ways to fix DTC P0035 is to repair a faulty turbocharger bypass valve. This can be exceptionally difficult, and sometimes the damage might be so severe that repairing the valve will not be enough and replacement is necessary.
Fortunately, finding a replacement is easy with the help of CarParts.com.
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