Code result
P0510
Closed Throttle Position Switch Malfunction
Moderate severity
What it means
The dedicated closed-throttle switch (or closed-throttle bit on the TPS) does not behave as expected - either it never activates, never deactivates, or shows incoherent state against TPS voltage and engine load. Used by older systems for fuel-cutoff and idle recognition.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Switch out of adjustment or worn
highOne of the most commonly reported causes for this code — check this first.
TPS idle voltage offset
mediumA plausible cause — test and verify before replacing parts.
Related help
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