Mass air ECU code...
Thread Starter
|
Posting Guru
Joined: Jun 2002
Posts: 1,026
Likes: 0
Mass air ECU code...
Guys I got this code on my trusty little autozone ECU scanner:
212 Tach, circuit, SPOUT grounded. SPOUT circuit, open circuit
Now if I take the spout out the base timing is still at 12* and when I put the spout back in the timing is taken over by the computer, so what does this code mean to me? Is there a resistor in the engine harness that could go bad that would cause this code? I originally thought the code came up because I drove the truck with the spout out, but after realizing that the spout was in my pocket when I got home I plugged it back in and reset the computer, but I am still getting the 212 code? This is on a 92 F-150 4x4 with mass air conversion computer....
212 Tach, circuit, SPOUT grounded. SPOUT circuit, open circuit
Now if I take the spout out the base timing is still at 12* and when I put the spout back in the timing is taken over by the computer, so what does this code mean to me? Is there a resistor in the engine harness that could go bad that would cause this code? I originally thought the code came up because I drove the truck with the spout out, but after realizing that the spout was in my pocket when I got home I plugged it back in and reset the computer, but I am still getting the 212 code? This is on a 92 F-150 4x4 with mass air conversion computer....
Thread Starter
|
Posting Guru
Joined: Jun 2002
Posts: 1,026
Likes: 0
Very good writeup on the speed density to mass air conversion...
http://www.eecperformance.com/mafconversion.html
http://www.eecperformance.com/mafconversion.html
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
My truck has occassionaly had the code 212 since I got it back in 1999. I never have been able to figure out if it is a problem or not and what is causing it. My code book says 212 means "loss of ignition diagnostic signal" and then says something about SPOUT. I thought the SPOUT was the timing advance like the old vacuum advance back in the day.
Freshman User
Joined: Nov 2007
Posts: 29
Likes: 0
Trending Topics
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
IDM comes from the TFI module and goes to pin 4 on the EEC. Loss of this signal could be a wiring issue or bad connector, but there's also an inline resistor, and of course it could be a TFI fault. The Bible has more info and pretty pics here... Ford Fuel Injection » Wiring Harnesses
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Thread
Thread Starter
Forum
Replies
Last Post
tempest411
1987 - 1996 F150 & Larger F-Series Trucks
24
Jun 5, 2025 11:11 PM
Stratifiedjoe
1987 - 1996 F150 & Larger F-Series Trucks
12
Jun 6, 2016 09:29 PM
GreaseGun Joe
1968-Present E-Series Van/Cutaway/Chassis
2
Aug 16, 2015 02:03 PM
Chevy 6.2D
1987 - 1996 F150 & Larger F-Series Trucks
19
Nov 14, 2009 09:50 AM
