P1503

Manufacturer-specific fault code

This code has different meanings depending on the manufacturer. Select your vehicle make below to view specific diagnosis and solutions:

Code breakdown

P — System

Powertrain (engine, transmission, fuel & emissions)

1 — Type

Manufacturer-specific

5 — Subsystem

Vehicle speed control, idle control and auxiliary inputs

Fiat
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BMW
Idle Speed Control Valve Closing Solenoid Control Circuit Signal Low
Volkswagen
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