Question about 2005 Volvo XC90
Asically this means that there is a problem with the Mass Air Flow (MAF) sensor or circuit. The PCM detects that the actual MAF sensor frequency signal is not within a predetermined range of the calculated MAF value for more than 4.0 seconds.
The simplest thing to do is to reset the code and see if it comes back. Then start with the cheapest, easiest repair procedures:
An incorrectly routed harness--Inspect the harness of the MAF sensor in order to verify that it is not routed too close to the following components:
- The secondary ignition wires or coils
- Any solenoids
- Any relays
- Any motors
Posted on Jun 07, 2010
Testimonial: "This is extremely helpful as it solves the problem instantaneously. Thanks guys."
This sounds like a dirty Mass Airflow Sensor causing the ECU to over adjust the mixture Lean/Rich. You can either try cleaning the MAF with MAF cleaner, replacing it, or having a mechanic try and clean it. They are rather delicate and can cause all kinds of havoc like no start! The MAF for your vehicle runs about $150... here is a good page for the replacemetn part. The MAF to replace is usually very easy. It is located between the air intake and the throttle body injector. So look for the black duct/hose (large) running from your air filter housing to the engine block and you will see a plastic housing somewhere in that duct/hose. The MAF is replaced by disconnecting the wiring, loosening hose connections on both sides and removing the old. The new one is placed and reconnected.
Posted on Jun 07, 2010
Testimonial: "This is helpful really."
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Posted on Jan 02, 2017
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