Home » OBD Codes » P0222 Throttle/Pedal Position Sensor/Switch B Circuit Low Input

P0222 Throttle/Pedal Position Sensor/Switch B Circuit Low Input

Technical Description

The Throttle Position Sensor/Switch B Circuit is experiencing a low input.

What does that mean?

This diagnostic trouble code (DTC) is a generic powertrain code that applies to OBD-II equipped vehicles. While it is a generic code, the specific repair steps may vary depending on the make and model of the vehicle.

A P0222 code indicates that the car’s computer has detected that the TPS (throttle position sensor) is reporting a voltage that is too low. In some vehicles, the lower limit for this voltage is 0.17 – 0.20 volts (V). The “B” refers to a specific circuit, sensor, or area within a circuit.

Did you make any adjustments when you installed it? If the signal value is less than 0.17V, the PCM sets this code. It could be due to an open or a short to ground in the signal circuit, or you may have lost the 5 Volt reference voltage.

Symptoms

Rough or low idle

Stalling

Surging

No/little acceleration

Other symptoms may also be present

Causes

A code P0222 may indicate that one or more of the following has occurred:

TPS not securely mounted

TPS circuit short to ground or another wire

Faulty TPS

Damaged computer (PCM)

Possible Solutions

Some recommended troubleshooting and repair steps include:

Carefully check the throttle position sensor (TPS), wiring connector, and wiring for any breaks or damage. Repair or replace as necessary.

Check the voltage at the TPS (refer to a service manual for your specific vehicle). If the voltage is too low, it indicates a problem and the TPS may need to be replaced.

If the TPS was recently replaced, it may need to be adjusted. Consult a repair manual for specific instructions on proper alignment or adjustment.

If there are no symptoms at all, the problem may be intermittent. Clearing the code may temporarily resolve the issue, but it is recommended to check the wiring for any rubbing, grounding, or other issues. The code may come back.

Professional Service

While we always recommend seeking mechanical solutions for this issue, if that is not possible, we offer the option to permanently delete this specific DTC. All other codes will continue to be addressed. If you are interested in this option, please upload your ECU file to our portal.

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