garajizOBD-II code · manufacturer-specific
P1421
Port Air Circuit Malfunction/ (AIR) System Bank 2
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does P1421 mean?
P1421 is defined as “Port Air Circuit Malfunction/ (AIR) System Bank 2”.
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.
- Citroen, Diğer, Peugeot: Catalyst Damage
- Subaru: Exhaust Gas Recirculation Circuit High Input
- Buick, Cadillac, Chevrolet, Chrysler, GM, GMC, Oldsmobile, Plymouth, Pontiac, Saturn: Intake Air Low Pressure Switch Circuit High Voltage
- Volkswagen: Secondary Air Injection Valve Circuit Short To Ground
- BMW: Secondary Air System Bank 1
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This page is general information; an exact diagnosis needs measurements and a technician’s check.