Easy Car Diagnostic Tool
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Detect faults and turn off the engine light independently and in a few seconds – For iPhone and Android – Compatible with all cars since 2001

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P1423 – BMW

Code : P1423
Make : BMW
Description : P1423 BMW Secondary Air Injection System Bank 1 Insufficient Flow Detected
Possible causes :
– Secondary Air Injection Valve
– Secondary Air Injection Pump
– Disconnected Secondary Air Injection hose
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.

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