Code result
P0120
Throttle/Pedal Position Sensor/Switch A Circuit Malfunction
High severity
What it means
The ECU detects a general electrical fault on the throttle position sensor/switch A circuit. Signal missing, implausible, or wiring broken. Generic catch-all when no more specific TPS-A code applies.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
TPS worn or failed (dead spot in resistive track)
highOne of the most commonly reported causes for this code — check this first.
TPS wiring or connector fault
mediumA plausible cause — test and verify before replacing parts.
TPS mechanically misaligned to throttle shaft
lowLess common, but worth ruling out after the more likely causes.
Related help
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