Possible causes

– Accelerator Pedal Position (APP) Switch harness is open or shorted
– Accelerator Pedal Position (APP) Switch circuit poor electrical circuit
– Faulty Accelerator Pedal Position (APP) Switch

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– Engine idle problems
– Possible hard to start
– Possible shifting problems

P0510 MITSUBISHI Description

Accelerator Pedal Position (APP)