P0220 Fault Code

Throttle Position Sensor/Switch (TPS) B Circuit Malfunction

• What does that mean?
• Causes
• Solutions

The P0220 fault code is a diagnostic trouble code (DTC) that indicates an issue with the throttle position sensor (TPS) circuit. This code is commonly found in vehicles with electronic throttle control (ETC) systems, and it typically points to a problem with the TPS sensor or its wiring.

The TPS sensor is responsible for measuring the position of the throttle plate, which is used by the engine control module (ECM) to control fuel injection, ignition timing, and other vital functions. When the TPS circuit fails, the ECM has no way of accurately controlling the throttle position, which can result in poor engine performance, idling issues, and stalling.

The solution to the P0220 code involves diagnosing and repairing the underlying issue with the TPS circuit, which may include replacing the sensor, checking the wiring for damage or corrosion, or reprogramming the ECM. It is important to address this issue promptly, as continued operation of the vehicle with a faulty TPS can result in further engine damage.

In summary, the P0220 fault code indicates an issue with the throttle position sensor circuit, and it requires prompt attention to ensure proper engine performance and avoid further damage.

What causes the P0220 code?

The P0220 fault code is related to the throttle position sensor (TPS) on a car. This sensor is responsible for telling the engine control module (ECM) how much the throttle is being opened, so it can adjust the fuel and air mixture accordingly. When the TPS is not working properly, it can cause a range of issues, including:

1. Rough or erratic idling - If the TPS is not functioning correctly, it can cause the engine to idle roughly or erratically. This can be especially noticeable when the car is at a stop.

2. Reduced power - When the TPS is not sending accurate information to the ECM, the car may not be able to accelerate as quickly or as smoothly as it should.

3. Stalling - In some cases, a faulty TPS can cause the engine to stall out completely, either when idling or when driving.

4. Check engine light - If the TPS is not operating correctly, it can trigger the check engine light to come on, with the P0220 fault code being one possible cause.

Overall, if you are experiencing any of these issues with your car, it's important to have the TPS checked out by a qualified mechanic to determine the cause of the problem.

How to fix P0220?

To fix a P0220 fault code on cars, follow these steps:

1. Check your vehicle's wiring: look for any damaged or corroded wires in the throttle control circuit or the pedal position sensor circuit. Repair or replace as needed.

2. Inspect the pedal position sensor: ensure that the sensor is in good condition and properly mounted. If it is damaged, it may need to be replaced.

3. Check the throttle body: clean the throttle body and ensure that the throttle plate moves freely. If there is any damage to the throttle body, it may need to be replaced.

4. Inspect the throttle control motor: ensure that the motor is functioning correctly and that it is properly mounted. If it is not working correctly, it may need to be replaced.

5. Check the fused ignition switch output circuit: if the circuit is not sending power to the pedal position sensor or throttle control motor, check the fuse and replace as needed.

6. If the above steps do not fix the issue, you may need to take your vehicle to a qualified mechanic to diagnose and repair the problem.