P2430AIR System Air Flow/Pressure Sensor Circuit (Bank 1)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- On engines with an electric secondary air (AIR) pump, a pressure sensor in the duct between pump and shut-off valve tells the engine computer whether air is really moving to bank 1. P2430 is the basic signal fault of that sensor. GM applies it in a special way: on the 2005–2006 3.8L V6 and the 2006 Corvette and CTS-V V8s it stands for a reading that stays frozen while the pump is commanded on (average error below 0.5 and variance below 1.0 for more than 5 s, once per trip, Type B with MIL after two trips); the 2018 tables keep this logic. Low and high voltage have their own codes, P2432 and P2433; P2435 is the bank 2 twin. The car drives normally, but the secondary air check cannot finish.
- What you may notice
- Check engine lamp after two cold starts
- Secondary air readiness not set, emissions test refused
- No noticeable change in driving behaviour
- Likely causes
- LikelyPressure sensor no longer reacts, signal frozen at one value
- PossibleSensor port or duct blocked by water, ice or debris from the pump
- PossibleCorroded connector or damaged harness at the sensor
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.