How to test and replace and electronic throttle body. Common trouble codes include P0122, P0123, P0222, P0223 and P2135.

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P0122: Throttle Position Sensor A Circuit Low Voltage
P0123: Throttle Position Sensor A Circuit High Voltage
P0222: Throttle Position Sensor B Circuit Low Voltage
P0223: Throttle Position Sensor B HIgh Voltage
P2135: Throttle Position Sensor A/B Voltage Incorrect Correlation

This particular throttle body is a single-barrel side draft type. The lower portion of the throttle valve is heated by engine coolant to prevent icing of the throttle plate. The throttle position sensor a/b and throttle actuator are built in to the throttle body.

Common issues with a failing throttle body include:
- Engine stalls (check throttle body gasket)
- Rough idle
- Poor acceleration
- Engine hesitation
- Engine surging
- Engine does not return to idle (check damage throttle valve)

Note:
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