DTC P2128-00: App Sensor No. 2 Circuit High Input: Notes

DTC P2128:00	APP sensor No. 2 circuit high input
DETECTION CONDITION	The PCM monitors the input voltage from APP sensor No. 2. If the input voltage at the PCM terminal 2AS is more than 4.9 V  , the PCM determines that the APP sensor No. 2 circuit has a malfunction. Diagnostic support note  This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Regulates the upper limit of the APP sensor output.
POSSIBLE CAUSE	APP sensor connector or terminals malfunction PCM connector or terminals malfunction APP sensor No. 2 malfunction Short to power supply in wiring harness between APP sensor terminal E and PCM terminal 2AS Open circuit in wiring harness between APP sensor terminal D and PCM terminal 2AT PCM malfunction

CAUTION:

• Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.