How to solve Wuling P0122 trouble code?
3 Answers
P0122 indicates a short circuit in the throttle/pedal position sensor/switch. Solution: Clean the throttle body, check the pedal position sensor for loose connectors or broken wiring. Here are some common Wuling Rongguang repair tips: 1. Coolant temperature warning light: Prolonged high-temperature operation may cause severe engine damage. Monitor the temperature gauge while driving. 2. Engine warning light: If illuminated or pressure gauge shows abnormal readings, stop the engine immediately. First check engine oil level; if normal, consult a mechanic to diagnose the cause. 3. Brake warning light: If illuminated when parking brake is released, promptly check brake fluid level for possible leaks.
When I was driving my Wuling, I encountered the P0122 trouble code. The car felt sluggish when starting and had poor acceleration. After checking online resources, it was suggested that there might be an issue with the throttle position sensor circuit, likely due to loose wiring or a faulty sensor. So, I decided to inspect it myself. First, I disconnected the negative terminal of the battery for safety, then opened the hood and located the small connector near the intake pipe. I noticed the connector was slightly oxidized and dirty, so I gently cleaned it with sandpaper and reconnected it securely. After starting the car and testing it for a few minutes, the fault light remained on. With no other options, I took it to my regular repair shop. The mechanic used an OBD tool to read the specific data stream and found that the voltage was too low, confirming that the sensor was indeed faulty. Replacing it with a new part cost a little over 100 yuan. Remember, during regular maintenance, don’t overlook cleaning the air filter and intake pipes—it can prevent similar issues and save you both hassle and money.
As a beginner in car maintenance, the P0122 code commonly appears in the throttle position sensor area, indicating a low circuit input issue. Drawing from my experience tinkering with Wuling, here's what I suggest: First, unplug the sensor connector to check for corroded or broken pins—sometimes simply tightening them can solve the problem. If that doesn't work, use a multimeter to measure voltage and resistance; normal values should vary between 0.5-4.5 volts. Readings below standard indicate a grounded or open sensor wire. Cleaning the throttle body and sensor contacts might also help, but avoid excessive use of cleaner to prevent short circuits. After repairs, remember to place a small label under the hood as a reminder to check for circuit aging next time. Before starting, ensure you have all necessary tools—DIY not only saves money but also helps you learn some automotive knowledge.
