DTC Detection Logic

DTC No.

Trouble diagnosis content

DTC detecting condition

Possible cause

P2127

Accelerator pedal position sensor 2 circuit low input

An excessively low voltage from the APP sensor 2 is sent to ECM.

• Harness or connectors

  (APP sensor 2 circuit is open or shorted.)

  [Crankshaft position sensor (POS) circuit is shorted.]

  (Refrigerant pressure sensor circuit is shorted.)

• Accelerator pedal position sensor (APP sensor 2)
• Crankshaft position sensor (POS)
• Refrigerant pressure sensor

P2128

Accelerator pedal position sensor 2 circuit high input

An excessively high voltage from the APP sensor 2 is sent to ECM.