Fault Code P2438
Code meaning, symptoms, possible causes, part number, and estimated cost.
P2438
Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 1
P2438 indicates a higher than expected reading from the air flow/pressure sensor circuit of the Secondary Air Injection (SAI) system for engine bank 1.
Part Details
Part Name
Secondary Air Injection (SAI) Air Flow/Pressure Sensor
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪400 - ₪1200
Engine Location
Secondary Air Injection System, Bank 1
Symptoms
- Check Engine Light on
- Rough engine idling
- Starting difficulties
- Increased emissions
Possible Causes
- 1Faulty SAI Air Flow/Pressure Sensor
- 2Damaged wiring or connector
- 3Overactive Secondary Air Pump
- 4Defective Electronic Control Unit (ECU)
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