Secondary Air Injection System Air Flow/Pressure Sensor Circuit - Bank 2
What does P2430 mean?
The P2430 code means the vehicle's onboard diagnostic system has detected: Secondary Air Injection System Air Flow/Pressure Sensor Circuit - Bank 2. This is a low severity code.
Common Symptoms
- Check Engine Light illuminated
- Failed emissions test
- No drivability symptoms
- Secondary air pump may run longer than normal
- Cold start emissions slightly elevated
Probable Causes (Ranked by Likelihood)
- Failed secondary air pressure sensor Very High
- Damaged wiring to air flow sensor High
- Clogged secondary air injection passages Moderate
- Failed secondary air pump on bank 2 Moderate
Step-by-Step Diagnostic Procedure
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Check the secondary air pressure sensor connector
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Measure sensor signal voltage with scan tool
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Inspect secondary air injection hoses for cracks or disconnection
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Verify the secondary air pump operates during cold start
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Check for restricted air passages at the exhaust manifold
Frequently Asked Questions
Can I drive with code P2430?
Yes, safe to drive. The secondary air injection system only operates during cold starts and has no effect on normal driving.
What causes P2430?
Usually a failed pressure sensor or clogged air injection passages. Carbon buildup can block the air passages at the exhaust manifold over time.
Is P2430 expensive to fix?
Typically $150 to $600. Sensor replacement is affordable. If the air passages are clogged, cleaning or exhaust manifold work adds cost.