Ford Explorer 2007 P0121 and P2135 Error Codes: Causes and Solutions After TPS and Throttle Actuator Replacement

Model: Ford Explorer 2007 Fault Code: P0121 Posted: 2015-05-13 13:39

I own a 2007 Ford Explorer with a 4.0L engine. I've been experiencing two persistent OBD2 error codes: P0121 and P2135. I recently replaced both the Throttle Position Sensor (TPS) and the throttle control actuator, but the codes continue to appear after driving several miles. Despite these replacements, the issue remains unresolved. What could be causing this recurring problem? Any insights or troubleshooting steps would be greatly appreciated.