What the P2172 code means. The P2172 code means that a large amount of airflow was suddenly inducted into the throttle actuator control system. The electronic control unit (ECU) detects this large amount of air and the P2172 diagnostic trouble code (DTC) is set. When the code is set, the Check Engine Light will be illuminated on the dashboard. Yes the distributor pickup is the same as the camshaft position sensor. If you're not getting even the normal '55' code when you cycle the ignition switch, you're not doing it right. Turn the ignition on-off-on three times within five seconds and leave it in the On position. Then wait, the codes do not display immediately since the diagnostic Damaged Throttle Due To Accident. If you’ve been in an accident, your throttle body may have been damaged. Even a minor fender bender can cause enough damage to the throttle body to cause problems. The most common component that wears out is the throttle position sensor (TPS). The TPS is responsible for sending a signal to your car’s Not sure if it changed on later years, but for the 2005 it was located on the throttle body: 3.7L V6 The Throttle Position Sensor (TPS) is mounted to the throttle body (1). 1. Remove air resonator tube at throttle body. 2. Disconnect TPS electrical connector. 3. Remove two TPS mounting screws (2). 4. Remove TPS. Remove the TPS Sensor bolts using a T-25 Torx socket. 9. New updated sensor on the left, old sensor style on the right. They are actually difference part numbers now too. 10. Mount the new sensor on throttle body using the included hardware. 11. Mount your throttle body on the intake manifold making sure the inlet hole is lined up properly. The PCM regularly checks the park/neutral position switch and compares its signal to pre-programmed values in its memory. If the computer doesn’t get the right response, it will set a code P0850. Note: The definition of code P0850 can differ according to the vehicle manufacturer. Check the appropriate repair manual or repair database for the The Top 3 Symptoms of a Bad Cam Position Sensor. Do you think you might be dealing with a bad CMP sensor? If your vehicle is exhibiting one or more of the following symptoms, you might be correct. Note: Because other problems can present the same symptoms as a faulty CMP sensor, you’ll want to perform a thorough diagnosis before condemning Here is the full procedure for testing the H.O (91-01) throttle position sensor. -----The throttle position sensor is connected to the throttle shaft on the throttle body. It sends throttle valve angle information to the PCM. The PCM uses this information to determine how much fuel the engine needs. The throttle position sensor (TPS) monitors the position of the throttle body butterfly valve. This allows your vehicle's computer to regulate the air intake and manage the fuel and air mixture. Throttle position sensors are often mounted to the throttle body itself, and may have a lever arm that moves as the throttle changes position. Backfiring. If the engine doesn’t have enough air, the air-to-fuel mixture ratio is off, and some fuel might be left after the spark. This fuel then makes its way through the system and could fufw.