|Trouble Code||Fault Location||Probable Cause|
|P2440||Secondary air injection (AIR) switching valve, bank 1 - valve stuck open||AIR switching valve|
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BAT Team Discussions for P2440
- 08' Chevy Avalanche check engine light on with decreased gas milage
More detailed information... DTC P1174 or P1175 Diagnostic Instructions - Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. - Review Strategy Based Diagnosis for an overview of the diagnostic approach. - Diagnostic Procedure Instructions provides an ...
- P2438 Secondary Air Injection System Air Flow/Pressure Sensor Circuit High Bank 2
So I replaced air control/switch valve for p2440. Now i have p2438 which I did not have before and other code is gone.Swapped my air pumps around and code still stays bank 2. Im wondering if maybe they sent me a bad replacement valve? 2008 Toyota Tundra...