OBD-II code · manufacturer-specific
P1531
Air Bypass System
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does P1531 mean?
P1531 is defined as “Air Bypass System”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Buick, GM, GMC, Saturn: A/C Low Side Temerature Sensor Fault
- Cadillac, Chevrolet, Chrysler, Oldsmobile: A/C Low Side Temperature Sensor Fault
- BMW: B Camshaft Position Actuator Control Open Circuit Bank 1
- Volkswagen: Intake Camshaft Control Circuit Open
- Citroen, Diğer, Peugeot: Invalid Test - Accelerator Pedal Movement
- Ford, Lincoln, Mercury: Invalid Test Accelerator Pedal Movement
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This page is general information; an exact diagnosis needs measurements and a technician’s check.