Ford

Have Ford questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

2004 Ford E450 AirBag light on. flashes 21 code. my service

Customer Question
2004 Ford E450 AirBag...

2004 Ford E450 AirBag lite on. Flashes 21 code. My service manual correlates that to DTCs: B1925 or B1935 or B1938. I performed the Ford pinpoint tests as best I could, where required I simulated the "Ford Restaint Diagnostic Tools" w/ electical loads etc. Only thing left is to replace the Restaint Control Unit.

Mechanic's Assistant: Thanks. Can you give me any more details about your issue?

Tried to create another paragraph, but that created a SEND command. I'm thinking may just have a stored failure that no longer exists. Are there any airbag code clearing tools for my vehicle (hopefully under $200)?

Submitted: 2 years ago.Category: Ford
Show More
Show Less
Ask Your Own Ford Question
Answered in 32 minutes by:
2/2/2016
Ford Mechanic: A. Penland, Ford Senior Master Technician, ASE replied 2 years ago
A. Penland
A. Penland, Ford Senior Master Technician, ASE
Category: Ford
Satisfied Customers: 7,006
Experience: ASE Master Certified, ASE Advanced Gasoline Engine Performance
Verified

There are actually 4 separate DTCs for LFC (Light Flashout Code) 21.

B1938, B1935, B1933 and B1925.

They lead to 4 different pin point test but all refer to the passenger air bag circuits. It would be best to actually have the Air Bag Module (RCM) tested for the DTCs to isolate the proper pin point test to stop replacing good parts.

Get the codes and post them on this page. Some auto parts stores can test the RCM for codes for you for free.

See the chart below.

Ask Your Own Ford Question
Ford Mechanic: A. Penland, Ford Senior Master Technician, ASE replied 2 years ago

Below.

Ask Your Own Ford Question
Customer reply replied 2 years ago
I is not my understanding that any auto part chains will test for my air bag codes?
Ford Mechanic: A. Penland, Ford Senior Master Technician, ASE replied 2 years ago

The ones I have been to will. Give them a call and ask first.

Ask Your Own Ford Question
Customer reply replied 2 years ago
Which chain are you talking about?
Ford Mechanic: A. Penland, Ford Senior Master Technician, ASE replied 2 years ago

Down here I have Advanced Auto Parts, Pep Boys, Autozone and O'reillys.

Ask Your Own Ford Question
Customer reply replied 2 years ago
Yeah, we have those; I'll give a try. Most people online claim I need a the Ford propietary SRS scaner, and the chains only read the engine codes Anyway my original question was how to CLEAR a stored code, assuming that the failure no longer exists? Is your answer the same as reading current fail codes?
Ford Mechanic: A. Penland, Ford Senior Master Technician, ASE replied 2 years ago

Y can try disconnecting the battery for 10 minutes. But if the problem is still present, the air bag light will remain on. To erase the codes, you will need a scan tool or code reader to do it. Independent shops can do it also. You do not need a Ford scan tool to do it.

Ask Your Own Ford Question
Customer reply replied 2 years ago
None of the chain auto part stores you mentioned rent, loan or check for you, airbag fault codes.
The most reputable (per Yelp.com) body shop near me advised I'd very likely save myself alot of headaches by taking it to Ford Service; and gave me a name of individual that solves his airbag issues. Wish I would have called him earlier.
Customer reply replied 2 years ago
Did not follow thru going to Ford Service as I previously stated. Decided I would search the web for one more hour, when I saw this site which solved my originally stated problem: http://www.doityourself.com/stry/how-to-reset-an-airbag-light#b
Customer reply replied 2 years ago
Oh yeah, I forgot to add; No charge!
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a ford mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask A. Penland Your Own Question
A. Penland
A. Penland
A. Penland, Ford Senior Master Technician, ASE
Category: Ford
Satisfied Customers: 7,006
7,006 Satisfied Customers
Experience: ASE Master Certified, ASE Advanced Gasoline Engine Performance

A. Penland is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on.

Rich DUSA

Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me.

MollyUSA

I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service.

Jason V.Kirkland, WA

I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there.

BRNew Jersey

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

< Previous | Next >

Meet the Experts:

Ron

Ron

ASE Certified Technician

25,182 satisfied customers

23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs

Chris (aka- Moose)

Chris (aka- Moose)

Technician

29,223 satisfied customers

16 years experience

John Mc

John Mc

Ford Technician

5,495 satisfied customers

19 years Ford Lincoln Mercury experience

Chuck

Chuck

ASE Certified Technician

1,685 satisfied customers

33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance

Cam

Cam

Journeyman Automotive Technician

10 satisfied customers

GM Grand Master Technician 2007. 14 years Automotive experience.

Mike V.

Mike V.

Auto Service Technician

1,591 satisfied customers

25 years experience on all makes and models, Licensed NYS Inspector.

Richard

Richard

ASE Certified Technician

1,524 satisfied customers

12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.

< Previous | Next >

Related Ford Questions
Ford F150 Super Crew: My 2001 F150 Super Crew truck was in
My 2001 F150 Super Crew truck was in a RH side Collision air bags did not deploy but the Air bag lamp LFC is flashing code #19 which my research says it means the crash memory is full. The workshop ma… read more
Mat
Mat
Associate Degree
14 satisfied customers
1994 Bronco: both front airbag sensors..getting code..open circuit
Lostrider, I replaced both front airbag sensors, on my 1994 Bronco and am still getting code 41: open circuit right side. Am at a loss as to what to do next. Thanks for the follow up. Steve/Customer… read more
Steve
Steve
Ford tech Specializing in electronics
Associate Degree
1 satisfied customers
passenger side and drivers side seatbelt locked..lite..seat
hit a deer did some damage airbag deployed on passenger side and drivers side seatbelt locked up i replaced the airbag seatbelt and crash sensor airbag lite in dash blinks 1-3 twice then stays on chec… read more
Chuck
Chuck
ASE Certified Technician
Vocational, Technical or Trade Scho
1,685 satisfied customers
94 mustang gt: airbag code 52 back up power supply volt boost fault
problems 94 mustang gt as follows-airbag code 52 back up power supply volt boost fault? post collison… read more
Drew(supermazdatech)
Drew(supermazdatech)
Senior Mazda Tech.
Vocational, Technical or Trade Scho
2,215 satisfied customers
airbags on my lincoln town car 97 is giving me a code 52 and
airbags on my lincoln town car 97 is giving me a code 52 and now the horn won't stop blowing… read more
Glenn
Glenn
Senior Master Ford Technician
Associate Degree
1,690 satisfied customers
2003 Ford Windstar: with the airbag light on..that 3 times) then stays
I have a 2003 Ford Windstar with the airbag light on. It blinks twice then blinks once (it repeats that 3 times) then stays on. I read online it may be a code 21. What is wrong and how do I fix it? Th… read more
Steve W
Steve W
Line Technician
Vocational, Technical or Trade Scho
1,968 satisfied customers
1998 WINDSTAR: FUEL PUMP..CIRCUIT HIGH..NO FUEL PRESSURE..MODULE
HAVE 1998 WINDSTAR CODE PO232 FUEL PUMP SECONDARY CIRCUIT HIGH . NO FUEL PRESSURE AND NO START . IS FUEL PUMP BAD AND IS IT REBUILDABLE OR NEED TO XXXXX MODULE .… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
Ford escapes: hey..test drove..possitive experinces with my cars
hey there. I just test drove a few ford escapes yesterday and today. I'm a long standing Ford owner and have always had possitive experinces with my cars. The car I settled on today, a V6 XLT automati… read more
snr master tech
snr master tech
technician
Vocational, Technical or Trade Scho
2 satisfied customers
1994 e-250: ignition 5x5 and ocassionaly while driving down the road/
1994 e-250 beeps when turning on ignition 5x5 and ocassionaly while driving down the road/… read more
Tim
Tim
Ford Senior Master Technician
Vocational, Technical or Trade Scho
997 satisfied customers
My 98 ford contour air bag light is flashing.My further investagation
My 98 ford contour air bag light is flashing.My further investagation with the chiltons book says its the safing sensor.I need to know how to fix it.I is okay sometimes but comes on a lot.Could it be … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
29,223 satisfied customers
1997 Ford expedition: indicator light..my dash board to turn..eddie
How do I get my airbag indicator light on my dash board to turn off? 1997 Ford Expodition Eddie Bower.… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
96 Ford Explorer airbag code 52 What does it mean and how
96 Ford Explorer airbag code 52? What does it mean and how to get rid of the light? I pulled the wrong fuse on the Power Distribution Box. As soon as I plugged it back in the Code 52 now appears, I've… read more
Richard
Richard
ASE Certified Technician
Vocational, Technical or Trade Scho
1,524 satisfied customers
Mustang: seats..a code 52 on the airbag system and dont know
I have a 2007 GT500 Mustang. we had the seats out for some custom work done and now I'm getting a code 52 on the airbag system and don't know how to clear the code.… read more
Tim
Tim
Associate Degree
3,172 satisfied customers
2002 Expedition: light flashes..5 times, then the air bag light stays
I have a 2002 Expedition that has an air bag light that stays on. When starting, the light flashes 3 times, then 5 times. This sequence repeats 5 times, then the air bag light stays on. The dealer sai… read more
Tim
Tim
Associate Degree
3,172 satisfied customers
I have a 2006 Ford Taurus. The airbag light flashes the following
I have a 2006 Ford Taurus. The airbag light flashes the following sequence: One (1) flash.. Pause.. Then eight (8) continous flashes. The cycle continues 3 to 4 times then the airbag light stays lit s… read more
zzdaryl
zzdaryl
Lead Auto Tech
Some college and advanced training
4 satisfied customers
1998 crown: replacing..driver side, 12 volt reading on passenger
i''ve got a 1998 crown vic, replacing driver an passenger airs, getting 6 volt reading on driver side, 12 volt reading on passenger????… read more
mustangmike
mustangmike
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
492 satisfied customers
2008 Ford: fault code..Motor home..airbag lite can on Flashed .
2008 Ford E450 Airbag fault code 34 ? E450 Aplication Class C Mini Motor home. Airbag lite can on Flashed . Stayed on. After several starts flashed a code 34 and now is back to normal operation. Is th… read more
Jim
Jim
Ford, Lincoln, Mercury Technician
Associate Degree
162 satisfied customers
Ford ranger: 2002 and the airbag light is..anybody..codes mean
Hi i have a Ford ranger 2002 and the airbag light is blinking, a friend put the computer (for airbags) and read codes B1877 and B1881, He doesn't have the code list so, could anybody help me to find o… read more
Glenn
Glenn
Senior Master Ford Technician
Associate Degree
1,690 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x