What does P0068 throttle angle deviation mean?
4 Answers
Fault code P0068 throttle angle deviation means that there is a discrepancy between the angle of the throttle plate controlled by the computer and the value monitored by the angle sensor, causing the engine computer to report an intake manifold throttle angle deviation fault. The causes of throttle angle deviation faults include the following: 1. Intake boost sensor failure: Short circuit or open circuit in the sensor wiring. 2. Throttle solenoid valve failure: Due to prolonged use, aging wiring combined with high current load can easily cause an open circuit in the solenoid valve wiring, preventing the throttle from opening or closing. 3. Lack of timely vehicle maintenance: Accumulated dust or foreign objects in the air filter can obstruct air intake into the engine, leading to abnormal boost pressure.
Last time my car threw this P0068 trouble code. I looked it up online myself, and it basically means the throttle position angle doesn't match what the ECU expects. The throttle controls engine air intake, so incorrect angles affect acceleration smoothness. Possible causes include a dirty or faulty throttle position sensor, wiring issues, or miscalculations by the ECU itself. When driving, I noticed sluggish throttle response and obvious jerking, especially during starts and hill climbs. I found this needs prompt attention, otherwise it'll increase fuel consumption and may cause long-term engine damage. I recommend first confirming the trouble code with a scanner, checking if sensor connectors are loose or heavily carbon-fouled, trying a simple throttle body cleaning yourself, and if that doesn't work, taking it to a professional shop for diagnosis.
As a seasoned driver with over a decade of experience, the P0068 code is all too familiar. Throttle angle deviation simply means the sensor signal doesn't match the expected value. In my experience, nine times out of ten it's that tiny position sensor acting up—either sticking or worn out from vibration. You'll feel the car shudder and lose power when you hit the gas, or see the tachometer jumping around. I've tried checking the wiring harness myself for loose connections or frayed wires—sometimes reseating it works, but usually you'll need a replacement. Don't ignore this small issue; if the sensor fails completely, the engine can't get air, and stalling mid-drive is dangerous. Don't forget to clean the throttle body during regular maintenance—carbon buildup often triggers this code too.
As a car enthusiast, I've researched the P0068 trouble code several times. Throttle angle deviation refers to the actual opening degree deviating from the normal range set by the ECU, affecting precise control of the air-fuel mixture ratio. The common causes are usually position sensor failures, such as internal resistor damage or circuit short circuits due to moisture. This can lead to air-fuel ratio imbalance, resulting in decreased fuel efficiency and even triggering the check engine light. Personally, I recommend testing it when experiencing noticeable hesitation during acceleration, checking the connector or replacing the sensor. DIY isn't difficult but be careful not to damage precision components. Related points include ensuring stable battery voltage, as low voltage can also mislead sensor readings.
