Advanced Diagnostics
Advanced Diagnostics - DTC P2135: Throttle Position (TP) Sensor A/B Incorrect Voltage CorrelationGeneral Description
The electronic throttle control system controls the throttle valve opening. The system includes the throttle actuator, the throttle valve, throttle position (TP) sensors A and B, the electronic throttle control system (ETCS) control relay, the accelerator pedal position (APP) sensor, and the powertrain control module (PCM). When the accelerator pedal is pressed, the APP sensor detects the accelerator pedal opening value. The accelerator pedal opening value is converted to a signal in the APP sensor and transmitted to the PCM to compute the target position. The PCM then operates the throttle actuator to move the throttle valve to the target position. The actual throttle valve position is determined by TP sensor A (installed in the throttle body). The PCM compares the voltages of TP sensor A and TP sensor B. If the voltage difference is a certain value or less for a set time, the PCM detects a short circuit between TP sensor A and TP sensor B, or if the voltage difference is a certain value or more for a set time, the PCM detects an incorrect correlation between TP sensor A and TP sensor B, and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type, OBD Status
Enable Conditions
Malfunction Threshold
One of these conditions must be met for at least 200 milliseconds:
- TP sensor A and TP sensor B short circuit
The voltage difference between TP sensor A and TP sensor B is 0.20 V or less.
- TP sensor A and TP sensor B incorrect correlation
The voltage difference between TP sensor A and TP sensor B which depends on the TP sensor A voltage exceeds the value shown in this table.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.
Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.