Flashing OD Light - Please Help with these Codes

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Mar 30, 2019 | 03:58 PM

AUM

Thread Starter

Mountain Pass

Joined: Mar 2019

Posts: 148

Likes: 1

Flashing OD Light - Please Help with these Codes

Hi,

Experiencing loss in power and flashing OD light. Not many certified ford dealers in my area to help.
Getting the following codes, not read by a pro ford scanner. 4x4 switch has been removed.
What could it be? Where do you recommend to begin looking?

B1431
B1840
P1804
B1982
P1832
B1302
B1458
B1434
C1182

Mar 30, 2019 | 11:20 PM

4x4pwr

Elder User

Joined: Aug 2014

Posts: 560

Likes: 4

From: Anchorage, Alaska

Look at the forscan thread, once I reply it will be a few below yours. It will show you what the codes mean... well worth the investment.

Passenger side airbag
Wiper circuit

P1832 is transfer case lockup. That's where I would start.

Mar 31, 2019 | 10:39 AM

handshaker

New User

Joined: Nov 2018

Posts: 14

Likes: 0

Flashing OD means you have tranny issues with overdrive slipping. I had this happen on my 95 TD. I found a used one for 250 bucks with 80k miles, installed it and sold it. I didn't want to grind up another auto with Diesel torque so i bought an 02 with a 6 speed handshaker.

Mar 31, 2019 | 07:09 PM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,741

Likes: 2,669

From: SE Florida

Quote:

Originally Posted by handshaker

Flashing OD means you have tranny issues with overdrive slipping.

No, it doesn't. A flashing OD light means transmission codes are stored. A slipping overdrive is one of about 50 different reasons that the light could flash.

Apr 7, 2019 | 02:27 PM

AUM

Thread Starter

Mountain Pass

Joined: Mar 2019

Posts: 148

Likes: 1

Hi,

Pulled some codes with a better scanner:

P1670
P0750
P0755
P0743
P1754
P0475
PO603
P0476
P0741

Pretty much all transmission related. It looks like I have a HD rebuild for me in the the near future...

Apr 7, 2019 | 06:08 PM

Fefanatic

Fleet Mechanic

Joined: Jan 2016

Posts: 1,804

Likes: 113

Most of those codes are saying circuit failure. Check the wiring harness going to the transmission.

Apr 7, 2019 | 06:52 PM

Hamfist

New User

Joined: Nov 2018

Posts: 20

Likes: 0

Yeah, that many different codes at once I would start by checking electrical connectors to see what came loose. Also check for a loose ground wire.

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Apr 7, 2019 | 09:28 PM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,741

Likes: 2,669

From: SE Florida

Quote:

Originally Posted by AUM

Hi,
Pretty much all transmission related. It looks like I have a HD rebuild for me in the the near future...

Your problem is in the wiring or grounds, not the transmission itself. Installing a new transmission won't fix this, you will still have the same problem.

Apr 10, 2019 | 03:55 PM

#10

AUM

Thread Starter

Mountain Pass

Joined: Mar 2019

Posts: 148

Likes: 1

We´ve gone through the tranny wiring, grounds and fuses. No culprits found yet... Any other guesses?
Could it be a failure in the solenoid?

The tranny is sealed with silicon (!?) from PO so obviously been intervened. We will have to open and check, while doing so will go ahead with a quality rebuild kit.