P1221 - Throttle Position Sensor 1- 2 Correlation

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?
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Possible causes
- Faulty Throttle Position (TP) Sensor
- Throttle Position (TP) Sensor harness is open or shorted
- Throttle Position (TP) Sensor circuit poor electrical connection
What does this mean? What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1221 Description

The Throttle Position (TP) Sensor is mounted on the throttle body of the Throttle Actuator Control (TAC) assembly. The sensor is actually 2 individual throttle position sensors within 1 housing. Two separate signal circuits, a low reference circuit, and a 5-volt reference circuit are used in order to connect the TP sensor assembly and the TAC module. The TP sensor signal voltage increases as the throttle opens. The signal circuit for TP sensor is pulled up to 5-volt reference voltage.

P1221 Information for specific makes
P1221 AUDI Cylinder Shut Off Exhaust Valves Short Circuit To Ground
P1221 BMW Pedal Position Sensor 2 Range/Performance Problem
P1221 BUICK Throttle Position Sensor 1- 2 Correlation
P1221 CADILLAC Throttle Position Sensor 1- 2 Correlation
P1221 CHEVROLET Throttle Position Sensor 1- 2 Correlation
P1221 FORD Traction Control System Malfunction
P1221 GMC Throttle Position Sensor 1- 2 Correlation
P1221 ISUZU Throttle Position Sensor 1- 2 Correlation
P1221 LINCOLN Traction Control System Malfunction
P1221 MINI Pedal Position Sensor 2 Range/Performance Problem
P1221 VOLKSWAGEN Cylinder Shut Off Exhaust Valves Short Circuit To Ground
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Repair Importance Level: 3
1=Low 2=Medium 3=High What does this mean?
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard What does this mean?
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