BMW P1423: Secondary Air Pump Valve Plausibility

Is your scanner showing BMW P1423?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

BMW P1423: Secondary Air Pump Valve Plausibility

OVERVIEW
Severity
:
High
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$550-$750
Can I Still Drive?
:
Yes

What Does The BMW P1423 Code Mean?

The Engine Control Module detects an implausible signal when activating the secondary air injection solenoid valve. The air mass is greater than 12 but less than 152 m kg/h, coolant temperature is greater than 3 but less than 75 degrees Celsius.

What Are The Potential Causes Of The BMW P1423 Code?

  • Connector to the secondary air injection valve is loose or disconnected
  • Secondary air injector valve circuit short
  • Secondary air injector valve circuit is open
  • Faulty secondary air injector valve

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Dorman 911-975 Secondary Air Injection Check Valve Compatible with Select BMW Models

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

BMW P1423, DTCDECODE.

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