Many Codes
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
Most of those codes indicate the engine/transmission may not be up to operating temperature before running the Key On Engine Off (KOEO) tests and Stored Code display.
The key error code is 513: Failure in EEC processor internal voltage.That is a fatal failure in my book. Clear the codes, warm up the truck, then run the KOEO/CM routine again. If Code 513 is still present, time for a replacement computer or at the very least you could have bad capacitors that may be replaced.
The key error code is 513: Failure in EEC processor internal voltage.That is a fatal failure in my book. Clear the codes, warm up the truck, then run the KOEO/CM routine again. If Code 513 is still present, time for a replacement computer or at the very least you could have bad capacitors that may be replaced.
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
Engines are easier to diagnose over the internet when all the codes are listed, and in order of test.
KOEO - (O) Self-Test Codes =
KOEO - (C)(CM) Continuous Memory Codes =
KOER - (R) Self-Test Codes =
Make sure your A/C, Heat, Radio, etc. are turned off when testing.
Do you have any Non-Stock modifications?
(Air Intake? Smog System? Exhaust System? Ignition System?)
KOEO - (O) Self-Test Codes =
KOEO - (C)(CM) Continuous Memory Codes =
KOER - (R) Self-Test Codes =
Make sure your A/C, Heat, Radio, etc. are turned off when testing.
Do you have any Non-Stock modifications?
(Air Intake? Smog System? Exhaust System? Ignition System?)
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