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· Registered
2010 SRX 2.8T
4 Posts
Discussion Starter · #1 ·
This MAF problem is apparently so difficult to fix the dealer either forgot to fix it or just gave up. It’s been at the dealer since July - yes, 5 months - mostly a warranty repair - which included several engine system problems, a head gasket leak, and a broken gear box, but just got it back only to find that the repair was never completed on the MAF. I don’t think the tech knew what they were doing and never cleared the permanent OBD-II code with a perfect drive cycle - plus there were tons of scratches on the paint from it sitting so long, terrible parking jobs, door dings, put on lots of miles and used all the gas in the tank. I’m really unhappy since I decided to take a shot at fixing it myself with a clean drive cycle and was able to clear the permanent code but still get the code popping back up. It seems like the evap system isn’t checking in.
Still haven’t heard back from the manager. Might have to report to insurance but that wouldn’t hold the dealer accountable. Legal options?

· Registered
'93 SedanDeville 60 Special
1,442 Posts
System voltage over 11v, engine running,
then the PCM did not detect any MAF input for 2 seconds
• Inspect the MAF sensor wiring and connectors for damage

Walk through these, start with easy check of no problems with the wiring or the pins for a problem
Check for any GM TSB to see if there has been MAF issues for you vehicle

Potential causes for this trouble code may include:
Dirty or contaminated mass air flow sensor
Failed MAF sensor
Intake air leaks
MAF sensor electrical harness or wiring problem (open, shorted, frayed, poor connection, etc.)
Clogged catalytic converter

Possible diagnostic and repair steps include:

Visually inspect all MAF sensor wiring and connectors to make sure they are intact, not frayed, broken, routed too close to ignition wires/coils, relays, motors, etc.
Visually inspect for any obvious air leaks in the air intake system
Visually closely inspect the MAF sensor wires or film to see if you can see contamination such as dirt, dust, oil, etc. If the air filter is dirty, replace it
Carefully clean the MAF using MAF cleaner spray
Loss of vacuum to the MAP sensor can trigger this DTC
A low minimum air rate through the sensor bore may cause this DTC to set at idle or during deceleration. Inspect for any vacuum leaks downstream of the MAF sensor.
Use a scan tool to monitor real-time sensor values from the MAF sensor, O2 sensors, etc.

Check for Technical Service Bulletins (TSBs) for your particular make/model in case of known issues on your vehicle The barometric pressure (BARO) that is used in order to calculate the predicted MAF value is initially based on the MAP sensor at key ON.
A high resistance on the ground circuit of the MAP sensor can cause this DTC to set
Do an exhaust back pressure test to determine if the catalytic converter may be clogged

· Registered
2012 SRX4 Premium
1,624 Posts
Wow, 5 MONTHS!? You're sure a lot easier going than I am. You know how I get results at dealers? I make it my 2nd home and discuss how crappy the service dept is with all the people shopping for new cars in the showroom.
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