P1220 BUICK, CADILLAC, CHEVROLET, GMC, ISUZU: THROTTLE POSITION SENSOR CIRCUIT 2
P1220 FORD, LINCOLN: SERIAL THROTTLE CONTROL FAULT DETECTED
P1220 HONDA: SERIES THROTTLE CONTROL SYSTEM MALFUNCTION
POST UPDATED IN February, 2023
P1220 BUICK, CADILLAC, CHEVROLET, GMC, ISUZU: THROTTLE POSITION SENSOR CIRCUIT 2
P1220 FORD, LINCOLN: SERIAL THROTTLE CONTROL FAULT DETECTED
P1220 HONDA: SERIES THROTTLE CONTROL SYSTEM MALFUNCTION
The TPS (Throttle Position Sensor) is an electrical device that is installed on the throttle body of the TAC (Throttle Actuator Control) assembly. It controls the air entering the engine and detects the position of the throttle.
This sensor basically consists of 2 individual sensors that detect throttle position. They are located inside a housing. Two separate signal circuits are used along with a low voltage reference circuit and a 5-volt circuit to connect the TPS and TAC assembly. The Throttle Position Sensor has increases in its signal voltage, depending on the throttle opening, with its maximum voltage being its 5V reference voltage.
The P1220 OBDII diagnostic code is a manufacturer-specific code that relates to a failure of the Throttle Position Sensor or the system that regulates the performance of the Throttle Position Sensor. It is necessary to consult the source of information to know how it is applied by the manufacturer.
Reasons to set the P1220 OBD2 DTC P1220 OBD2 code:
To troubleshoot the P1220 OBDII fault code, try this: