Posts Tagged: bad TPS symptoms
How to Diagnose a P0122 Code Like a Pro
P0122 Code: What It Means, What Causes It, and How I Diagnose It Quick Summary A P0122 code is defined as a Throttle Position Sensor/Switch A Circuit Low Input. This indicates a low-voltage issue in the throttle position sensor circuit. In plain terms, the ECM isn’t getting the signal it expects from the throttle body. The most common causes are a failing throttle position sensor, wiring faults, or a dirty throttle body that affects sensor feedback. The right way to fix a P0122 code is to verify the signal—not guess … Read More
What a P0121 Code Means and How to Fix It Fast
P0121 Code: What It Means, What Causes It, and How I Diagnose It Quick Summary A P0121 code is defined as: a Throttle Position Sensor/Switch A Circuit Range/Performance Problem. This means the ECM is seeing a mismatch between the expected and actual throttle position data. In most cases, the root cause is a faulty throttle position sensor, a dirty or sticking throttle body, or wiring issues. The key to fixing a P0121 code is verifying the signal integrity between the throttle body and the ECM. If you follow a structured … Read More