Separate the three most common reduced-engine-power stories—electronic throttle-body faults, accelerator-pedal correlation problems, and ugly system voltage—before you replace the wrong part.
If throttle response is erratic, idle quality changes, and throttle-position or actuator-performance codes dominate, the throttle body becomes the lead suspect. Carbon drag or an internal motor and sensor problem can keep the blade from following command cleanly.
When pedal-signal disagreement codes join the reduced-power event, the system may be seeing mismatched driver input rather than a sticking throttle plate. That is why you should compare both pedal and throttle data before buying either one.
Electronic throttle control is extremely sensitive to battery condition, charging stability, grounds, and relay-feed quality. A weak electrical system can make a healthy throttle body look guilty because the actuator and sensors lose a stable reference.
P1516, P2101, P2111, and P2112 lean toward throttle-body behavior. P2135 and some pedal-position faults pull correlation logic into the picture. P060A, P061B, or low-voltage codes mean the controller or supply side may be contaminating the whole story.
Check battery and charging voltage first. Then inspect connectors and throttle-body condition. Only after the electrical baseline is clean should you decide whether the throttle body, pedal assembly, or controller logic actually failed.
Built to keep related fixes, symptoms, and hubs one step away.
Built to keep related fixes, symptoms, and hubs one step away.