OBD Codes P0100 and P0110 - Nissan Forum
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#1 Old Nov 1st, 2004, 10:21 PM
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OBD Codes P0100 and P0110

Drove my 96 HB (109k miles) today to pick up my daughter from school, ran fine. Came back out and started the truck, pulled away and it started to die on me.

Baby'd it back home and replaced the following: plugs, Dist cap & rotor, wires, and fuel filter. Have the PCV valve, but can't find it on the intake manifold - any help?

Took it for a test drive and it started acting up again after only a few hundred feet. Gets up to about 3k RPM and the starts spitting and sputtering. If I let it sit and idle it will idle smooth for 5 mins and the start fluctuating.

My scanner tells me the 2 codes are registered P0100 (Mass air flow Sensor circuit) and P0110 (air temp circuit).

Anybody have any ideas what might be causing this? The air flow sensor and air temp sensor are both mounted on the intake/air cleaner assy. Both of these are connected, but I don't know how to test them to ensure they are working properly.

Is there something common between these two sensors that may be causing the problems? My scanner is registering readings from both sensors.

Thanks - Ray
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#2 Old Nov 1st, 2004, 10:43 PM
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Location: Morgantown, WV
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The air temp sensor is wired with very poor quality wire and routed so that it flexes every time the engine moves in it's mounts. Inspection usually reveals a broken wire. The sensor is simply a resistor mounted in the air filter housing. The mass air flow sensor has been covered prior on this forum. I am not certain, but I think it can be cleaned. Or one code may have been tripped by the other. EX My brothers vg30e will set a knock sensor code anytime another code sets. When I fix the main problem, the knock code clears, too.

Aaron Ford
95 2WD Nissan PU E
2002 Oldsmobile Intrigue GX
"The hard part about playing chicken is knowing when to flinch" Scott Glenn in The Hunt for Red October
#3 Old Nov 2nd, 2004, 06:25 PM
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Thanks for the reply. I couldn't find a specific ref to cleaning the MAF. You have a link to somewhere? I tried to spray contact cleaner on the sensor, but no help.

The truck seems to run better with the MAF disconnected.

Have a source for purchasing the MAF?

Quote:
Originally Posted by aaronford
The air temp sensor is wired with very poor quality wire and routed so that it flexes every time the engine moves in it's mounts. Inspection usually reveals a broken wire. The sensor is simply a resistor mounted in the air filter housing. The mass air flow sensor has been covered prior on this forum. I am not certain, but I think it can be cleaned. Or one code may have been tripped by the other. EX My brothers vg30e will set a knock sensor code anytime another code sets. When I fix the main problem, the knock code clears, too.
#4 Old Nov 16th, 2004, 08:48 PM
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Join Date: Jul 2004
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Lightbulb Fixed

Okay!!!

Got my truck back on the road.

After many calls and searching for a used MAF sensor, I found an electronics repair center that deals with and rebuilds automotive sensors and sent my MAF to them for testing/repair.

The folks a SIA Electronics couldn't have been more helpful. The turnaround time for me was 8 days. I sent the MAF sensor only (not the throat) and they tested, determinded the fault and rebuilt the sensor. Total with shipping was $137 usd. Much better than the $477 usd the dealer wanted for a new one.

Anyway here is SIA's contact info:

SIA Electronics
730 N Minnie St
Tilden, Il 62292

(618) 587-3308
Fax (618) 587-6408

You'll talk with Christy or Caci. Either one can help you out. I even spoke to the tech (Chuck) who was working on mine. At first it was showing good, but after I spoke with him and explained the systems, he went back and retested the sensor and it finally failed the 5th time through his tests.

I reinstalled the MAF and was back on the road in about ten minutes.

Good people to deal with.
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