Properly diagnose your vehicles.

bishopts · 03-23-2026, 07:39 PM

This is just a recommendation from a currently employed diagnostic tech.
Its coming up on April right now. I work on several cars per day and I've replaced 0 MAF sensors.
So before every one of you get a cookie cutter diag from the internet that suggests to replace you MAF sensor. You probably want to dig further. You guys know i check the repair threads quite a bit and none of you replace a MAF and your problem is gone. Its always still acting up and you have to figure out something else.
P0171,p0174, p0300's, p0011's. Being fixed with a MAF, you are more likely going to be hit by lightning.
Im not saying MAF never fail, I'm just saying it shouldn't be your first guess.

speedyink1 · 03-23-2026, 08:58 PM

Hooray for information dumps. If I have the need to google this in the future, thank you.

2SS Capt · 03-24-2026, 12:24 AM

Quote:

Originally Posted by bishopts

This is just a recommendation from a currently employed diagnostic tech.
Its coming up on April right now. I work on several cars per day and I've replaced 0 MAF sensors.
So before every one of you get a cookie cutter diag from the internet that suggests to replace you MAF sensor. You probably want to dig further. You guys know i check the repair threads quite a bit and none of you replace a MAF and your problem is gone. Its always still acting up and you have to figure out something else.
P0171,p0174, p0300's, p0011's. Being fixed with a MAF, you are more likely going to be hit by lightning.
Im not saying MAF never fail, I'm just saying it shouldn't be your first guess.

Thank you!

But what is the most common cause of these failures??? Can you give some guidance on resolving these codes???

bishopts · 03-24-2026, 06:33 AM

Quote:

Originally Posted by 2SS Capt

Thank you!

But what is the most common cause of these failures??? Can you give some guidance on resolving these codes???

P0300s are usually plugs or coils,
p0171 and p0174 are vacuum leaks mostly.
P0011 p0014 p0017 are usually lack of oil and pushing your oil changes too long. Which has streached the chains and beat the cam phasers to death.
P06de is the oil pump pressure control valve.
P0128 is a thermostat
P0299 is tricky, sometimes its a turbo but usually its a boost tube is cut

roostere4 · 03-24-2026, 04:27 PM

Thanks for sharing this information!!
Always appreciate it when someone shares their expertise and knowledge

03-23-2026, 07:39 PM	#1
bishopts Drives: 2017 2ss 6mt Join Date: Mar 2024 Location: dallas Posts: 1,530	Properly diagnose your vehicles. This is just a recommendation from a currently employed diagnostic tech. Its coming up on April right now. I work on several cars per day and I've replaced 0 MAF sensors. So before every one of you get a cookie cutter diag from the internet that suggests to replace you MAF sensor. You probably want to dig further. You guys know i check the repair threads quite a bit and none of you replace a MAF and your problem is gone. Its always still acting up and you have to figure out something else. P0171,p0174, p0300's, p0011's. Being fixed with a MAF, you are more likely going to be hit by lightning. Im not saying MAF never fail, I'm just saying it shouldn't be your first guess.

03-23-2026, 08:58 PM	#2
speedyink1 Drives: 2023 Camaro 1SS 1LE 6MT Join Date: Nov 2023 Location: Vancouver Island Posts: 604	Hooray for information dumps. If I have the need to google this in the future, thank you.

03-24-2026, 04:27 PM	#5
roostere4 Drives: 1987 IROC, 2020 ZL1 Join Date: Nov 2023 Location: Nashvile Posts: 147	Thanks for sharing this information!! Always appreciate it when someone shares their expertise and knowledge

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