garajizOBD-II code · manufacturer-specific
P1154
Air Assist Control Valve Circuit Malfunction
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does P1154 mean?
P1154 is defined as “Air Assist Control Valve Circuit Malfunction”.
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.
- Ford, Lincoln, Mercury: Bank 2 Fuel Control Shifted Rich
- Mazda: Bank 2 Fuel Control Shifted Rich FAOSC
- Kia: HO2S 21 Transistion Switch Time Fault
- Buick, Cadillac, Chevrolet, Chrysler, GM, GMC, Oldsmobile, Saturn: HO2S Transition Time Ratio
- Volkswagen: Manifold Switch Over Malfunction
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This page is general information; an exact diagnosis needs measurements and a technician’s check.