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EC-422 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] P2127, P2128 APP SENSOR P2127, P2128 APP SENSOR Description INFOID:0000000009720177 The accelerator pedal position sensor is installed on the upper end DTC Logic INFOID:0000000009720178 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION: >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE 1. Start engine and let it idle for 1 second. 2. Check DTC. Is DTC detected? YES >> Go to NO >> INSPECTION END Diagnosis Procedure INFOID:0000000009720179 1. CHECK GROUND CONNECTION 1. Turn ignition switch OFF. 2. Check ground connection E38. Refer to Ground Inspection in . PBIB1741E DTC No. Trouble diagnosis name DTC detecting condition Possible cause P2127 Accelerator pedal posi- An excessively low voltage from the APP sen- • Harness or connectors (APP sensor 2 circuit is open or shorted.) • Accelerator pedal position sensor (APP sensor 2) • Crankshaft position sensor (POS) P2128 Accelerator pedal posi- An excessively high voltage from the APP sen- |