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P0510 OBD-II Trouble Code: P0510 Closed Throttle Position Switch Malfunction

check engine light

P0510 code definition

A P0510 code indicates an abnormality has been detected in the position of the throttle plate while the throttle is closed.

What the P0510 code means

The P0510 refers to a problem with the vehicle's throttle plate. In most vehicle models, the Powertrain Control Module (PCM) will register a code if an improper throttle plate has been reported for at least five seconds. The PCM gauges the throttle's position based on differences in voltage. If the throttle plate is improperly placed, it will pose significant issues for the engine and acceleration.

What causes the P0510 code?

A P0510 occurs when something has gone wrong with a component of the throttle body. The throttle position sensor and closed throttle position switch are the two most common components at fault for this code. A P0510 may also occur due to an issue with the throttle-body related wiring. Failure of the PCM is another potential issue, although this is very rare.

What are the symptoms of the P0510 code?

The P0510 code will involve problems related to the powertrain and engine. Moderate cases will negatively affect driving performance, while more serious instances are:

How does a mechanic diagnose the P0510 code?

A P0510 code may be first identified by plugging an OBD-II code reader into the vehicle's computer interface. Systems should be retested following each repair in order to gauge success.

Common mistakes when diagnosing the P0510 code

Potential issues relating to the P0510 may be confused with other code causes if multiple throttle-related codes have been reported at once. In addition, it is common for throttle position sensors to be incorrectly blamed for the code when the problem actually lies with the closed throttle position switches. Although the P0510 code has been known to be caused by failure of the PCM, the chances of this being the cause are very unlikely. All of the wiring and sensor components should be checked out first before blaming the problem on the PCM.

How serious is the P0510 code?

A P0510 code entails serious problems with the engine and accelerator. In severe cases, the car will be practically inoperable. A P0510 code should be treated as a very serious problem for the vehicle and repaired before using the vehicle again.

What repairs can fix the P0510 code?

For many vehicle models, a throttle body will need to be replaced completely in the event of a faulty component. Nonetheless, a mechanic should inspect all related wiring and connectors for damage or disconnection and any problems as needed. If possible, any faulty or broken components related to the trouble code should be identified and replaced or fixed as needed.

Additional comments for consideration regarding the P0510 code

The P0510 code is most common with vehicles that do not use an accelerator cable. Different vehicle models may have different set parameters for a P0510 code.

Need help with a P0510 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
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