Question about Cars & Trucks

1 Answer

My 5.3l vortec will start with ether but wont stay running

Throws scanner code P0102 MAF or VAF A circuit low input

Posted by on

  • 3 more comments 
  • shawn mcfadden Feb 12, 2012

    will this make my truck not want to start

  • shawn mcfadden Feb 12, 2012

    i cleaned the MAF sensor and plug wanted to fire but wouldnt can some one please help

  • shawn mcfadden Feb 12, 2012

    i have fuel pressure all the way to the fuel rail i can also here the fuel pump turning on

  • shawn mcfadden Feb 12, 2012

    i have fuel pressure all the way to the fuel rail i can also here the fuel pump turning on

  • shawn mcfadden Feb 12, 2012

    also i have just switched from the 4.3l vortec to the 5.3l vortec everything is the same i also installed the original wire harness and brain that came with the 5.3l motor the issue i am having is with the 5.3l i really need to get back on the road i really hope someone out there has some advice


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 2 Answers

Is your gas cap on tight? Could be low fuel pressure. Can you check your fuel pressure? Have you checked your fuel filter? You may need to replace the fuel pressure regulator. Locate it and pull vac hose off of it and if there is gas coming out of hose replace regulator. You will need to relieve pressure before changing.

Posted on Feb 12, 2012

3 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 17970 Answers

SOURCE: service engine soon light, code

The Volume Airflow (VAF) / Mass Air Flow (MAF) / Intake Air Temperature (IAT) sensor is located on the air intake housing tube inlet.

Your code is P0102 - Mass Air Flow (MAF) Circuit Low Input, them basically this means that there is a problem with the Mass Air Flow (MAF) sensor or circuit. A more technical description would be that the MAF circuit had lower than expected voltage (air flow). Other MAF sensor circuit DTC trouble codes are P0100, P0101, P0103, and P0104.


Fig. Identifying mass air flow sensor connector-3.5L, 3.8L, 3.9L and 5.3L engines

Symptoms: You will likely not notice any serious drivability problems, although there may be symptoms such as a general decrease in power or sluggishness.

Causes: A code P0102 may mean that one or more of the following has happened:
The MAF may be disconnected, or a wiring connection may be bad
The MAF may be dirty or otherwise contaminated (Note: if you use a reusable oiled air filter, be careful not to apply too much oil or that can contaminate the MAF).
The MAF sensor may be faulty
The vehicle computer may be faulty (very rare)

Possible Solutions: The simplest thing to do is to reset the code and see if it comes back. Then start with the cheapest, easiest repair procedures:
Verify that the Mass Air Flow Sensor wiring is connected properly and that there are no broken / frayed wires.
Inspect for any air leaks near the MAF sensor.
Take the MAF out and clean it using a spray cleaner such as brake cleaner or electrical contact cleaner. Be gentle with the sensor.
Check the voltage of the MAF sensor (refer to a repair manual for vehicle specific information)
Replace the MAF sensor.

Then, like a reference guide check this TSB DTC P0102 MAF and this article about Mass Air Flow sensor, what does it do and how it does it.
Test, check it and keep us updated.

Abotu Oxygen Sensor - O2 codes, will need look some code as P0420 in your OBD II codes reader to check O2 sensor wiring for damage from resting on exhaust pipe or frayed wiring.

Hope this helps.

Posted on Jul 09, 2011

  • 1049 Answers

SOURCE: my volvos40 has engine codes p101 mafor vaf chk

for p0102, you can check here.

Posted on Sep 27, 2011

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Volvo s40 code moteur p0102 inf svp

code p 102 refers to mas air flow (MAF) sensor/ volume (VAF) sensor ---low input===causes --wiring short to ground --MAF/VAF sensor ---ECM
code p 103 refers to MAF/VAF sensor ---high input====causes --wiring short to positive ---MAF/VAF sensor---ECM

Aug 20, 2016 | 2002 Volvo S40

1 Answer

What is causing recurrent DTC P0102?

code p 0102 refers to mass air flow (MAF) sensor/volume air flow(VAF) sensor--low input===causes ---wiring short to ground--MAF/VAF sensor---ecm
check the wiring to the unit--plug connection

Mar 31, 2016 | 1996 Volvo 850

1 Answer

Volvo s80 T6 2000 error cood P0102

code p0102 refers to mass air flow (MAF) / volume air flow(VAF sensor-- low input===causes --wiring short to ground---MAF/VAF sensors---ECM
I would replace the MAFor VAF sensor after having each one tested to find the faulty unit.

Mar 04, 2015 | Volvo Cars & Trucks

1 Answer

What does code po102 mean ?

code p0102 refers to mass air flow(MAF) sensor/ volume air flow(VAF) sensor --low input===causes--wiring short to ground--MAF/VAF sensor/s--ECM

clean or replace the MAF/VAF senspr

Aug 14, 2014 | Cars & Trucks

1 Answer

97' mitsubishi diamante code P0102

code p0102 refers to mass air flow(MAF) sensor/ volume (VAF)sensor --low input==== causes --wiring short to ground---MAF/VAF sensor---ECM
replace the MAF or VAF sensor.

Feb 14, 2014 | 2007 Lincoln Town Car Signature Limited...

1 Answer

P0102 mod 10

code p0102 refers to mass air flow (MAF) sensor/volume air flow (VAF)sensor --low input===causes-- wiring short to ground---MAF/VAF sensor---ECM
replace sensor

Dec 27, 2013 | 1997 Chevrolet Malibu

1 Answer

99 Audi A4 quarto, keep having to replace same coil pack and code p0102 but changed the MAF. My last guess is the wiring has gone bad, but I don't know how to fix it or even where to start.

code p0102 refers to mass air flow (MAF) sensor/volume (VAF) sensor-low input===causes --wiring short to ground---MAF/VAF sensor--- ECM Replace the sensors and check for a wire shorting across to the earth pin. Code po102 has no reference to coil packs but check that the wiring to the coil has not been damaged when removing for replacement.

Sep 23, 2013 | Cars & Trucks

1 Answer

The truck stalled out when driving. Sounds like it wants to start, but won't fire. Codes found - P0410, P0128, P0141, P0102. Please help. Daughter's truck and she leaves for college in a few days.

code p0410 refers to secondary injection system--malfunction===causes wiring--air valve--air solenoid--- ECM
code p0141 refers to heated oxygen sensor-2 bank1-heater control -circuit malfunction===causes --wiring--oxygen sensor--ECM
code p0128 refers to coolant thermostat --coolant temp below thermostat regulating temperature==causes mechanical fault (thermostat stuck open)
code p0102 refers to mass air flow (MAF) sensor/ volume air flow (VAF) sensor low input===causes wiring short to ground--MAF/VAF sensor ECM

Aug 22, 2013 | 2001 GMC Jimmy

1 Answer

Mazda 3 won't idle.

code p0 refers to intake air temp sensor --circuit malfunstion causes are wiring open circuit(broken)wiring short to ground bad earth and ECM.
code po113 refers to mass air flow( MAF) sensor/ volume air flow (VAF) sensor --low input. Causes may bewiring short to ground MAF?VAF sensor faulty ECM
code po327 refers to Knock sensor (KS) bank 1--low input. Cause may be insecure (loose) KS poor connection- wiring ---short to ground incorrectkly tensioned KS and ECM

Mar 10, 2013 | Cars & Trucks

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

586 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

75797 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides