What Does P2430 Mean?
The secondary air injection system air flow or pressure sensor circuit on bank 1 has an electrical fault. The PCM has detected an issue with the sensor's signal voltage or circuit integrity.
Common Causes
35%
Failed secondary air injection pressure/flow sensor
30%
Damaged wiring or connector at sensor
20%
Clogged or restricted air injection system affecting sensor
15%
PCM internal circuit fault
Diagnostic Steps
1
Step 1: Inspect secondary air injection pressure sensor connector and wiring for damage or corrosion
2
Step 2: Check sensor reference voltage (typically 5V) at sensor connector with key on
3
Step 3: Measure sensor signal voltage during SAI pump operation and compare to specifications
4
Step 4: Check for restrictions in SAI system including pump filter and check valves
5
Step 5: Test sensor by applying regulated air pressure if possible and monitoring signal voltage
Estimated Repair Cost
$150 - $450
Parts + labor, varies by vehicle and location
The secondary air injection system air flow or pressure sensor circuit on bank 1 has an electrical fault. The PCM has detected an issue with the sensor's signal voltage or circuit integrity.
The most common cause of P2430 (Secondary Air Injection System Air Flow/Pressure Sensor Circuit Bank 1) is: Failed secondary air injection pressure/flow sensor
Typical repair costs for P2430 range from $150 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive. Only affects cold-start emissions. Will likely cause emission test failure but no immediate vehicle damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2430 to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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