Join Now
International Automotive Technicians Network

P2138 Diagnostic Trouble Code Discussion for March 2014

Accelerator Position Sensor 1-2 Correlation

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P2138
Help Request Posted
2005 Subaru Legacy GT 2.5L Poor Idle Quality, Stall, MIL Lamp on VIN: 4S3BL68675
P2138: Throttle Pedal Position Sensor D-E Voltage Rationality. ... problem.At times it will only idle and throws code p2138.We finally got it to happen for us and we recorded following data.sub accel.sensor 1.16v at idle-main accel.sensor1.04v at idle and both change when you push pedal to 3.68v.Throttle motor duty -7 and...
March 01, 2014