1999 - 2003 7.3L Power Stroke Diesel

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Airbag Code 21

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Old

Dec 27, 2020 | 10:40 PM

#1

RigCity

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Laughing Gas

Joined: Jan 2017

Posts: 1,221

Likes: 94

Airbag Code 21

My airbag light just stared flashing code 21 today of course it’s been on all day and just shut off as I make this post. Has anyone repaired this code before? thanks

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Old

Dec 28, 2020 | 06:21 AM

#2

FordTruckNoob

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Joined: Jan 2005

Posts: 13,122

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From: Henderson, NV

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Model year of vehicle please? May I suggest adding a signature to your profile? It will help answer a lot of basic questions from the get go.

Here is an initial crack at solving your problem:
https://itstillruns.com/airbag-light...s-7652177.html

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Old

Dec 28, 2020 | 04:26 PM

#3

RigCity

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Laughing Gas

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Thank You for the reply it is an 02. That sounds good I’ll set one up with the corresponding information. Today after driving the light has not returned.

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Old

Dec 29, 2020 | 07:37 AM

#4

FordTruckNoob

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Posts: 13,122

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From: Henderson, NV

Club FTE Gold Member

Here is the pertinent portion of the FSM. Good luck.

Tagging @Y2KW57 for Tech Folder content.

Attached Images

2002 Section 501-20B Supplemental Restraint System DIAGNOSIS AND TESTING.pdf (406.2 KB, 146 views)

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