P2102 - THROTTLE ACTUATOR "A" MOTOR CONTROL CIRCUIT LOW
Description of DTC code P2102
The Throttle Actuator "A" (TAC) is located in front of or above the engine. It is controlled by the car's computer via an electrical signal. The PCM (Powertrain Control Module) gets voltage inputs from the intake air temperature, coolant temperature, engine speed, and air conditioning pressure sensors so the signal to the TAC can be adjusted. The throttle motor is in charge of closing and opening the throttle plate. Through this process, it allows more or less air to pass through but this may depend on the driver's request.
When the P2102 OBDII diagnostic code is set, it is because an electrical problem was found in the Throttle Actuator "A" circuit.
Symptoms of fault code P2102
- The Check Engine light turns on.
- A fixed idle speed.
- Acceleration is impossible.
Causes of OBD2 P2102
Reasons to set the P2102 OBD2 fault code:
- Accelerator Actuator "A" circuit is possibly shorted or open.
- The CT scan may be faulty.
Possible solutions of the DTC code P2102
Steps to troubleshoot problems related to the OBDII DTC P2102:
- Check the TSBs for your vehicle model.
- Check the Accelerator Actuator "A" connector and wires. Check for corrosion on the connector terminals. Make sure the wires are not burned or worn. Repair any damage and replace the electrical component if necessary.
- With a DVOM connected to both terminals of the CT, check its resistance. The result obtained should match the one specified by the manufacturer. If there is infinite resistance, the actuator is shorted, you have to replace it.
- Verify that the power circuit has 12 volts. If no voltage is present, repair PCM or relay wires.
- Check for a good ground connection. Fix if necessary.