P0121
Medium severityThrottle Position Range/Performance
Quick answer
P0121 (Throttle Position Range/Performance) means: The throttle position sensor reading is implausible. Diagnose soon; can cause limp mode. Typical Malaysia repair cost: RM200–RM800 (approximate).
Symptoms
- •Hesitation
- •Surging
- •Limp mode
Likely causes
- •Faulty throttle body/TPS
- •Wiring fault
- •Dirty throttle body
Can I drive?
Diagnose soon; can cause limp mode.
Estimated repair cost (Malaysia)
RM200–RM800 (approximate)
This is general information, not a diagnosis. AutoMalaya OBD helps explain your car’s actual scan data; a qualified mechanic may still need to inspect the vehicle.