P0650 and P0801 codes - CamaroZ28.Com Message Board


LS1 Based Engine Tech LS1 / LS6 / LS2 / LS3 / LS7 Engine Tech

Reply
 
Thread Tools Search this Thread
Old 06-01-2018, 03:01 PM   #1  
Registered User
Thread Starter
 
Join Date: May 2018
Posts: 4
P0650 and P0801 codes

i have a 2000 z28, its been having some issues with the transmission shifting and the gauge cluster not working. its throwing 2 codes at me right now, P0650 which is MIL circuit problem, and P0801 which says reverse inhibit control circuit problem(confusing to me since its an auto....). after it started acting up, i replaced the ecm, but with no change. i've also replaced the ignition switch. all i can really find is that it could be due to a wiring short or harness problem, but im not sure which one could cause all that, or really where to look for it, any tips? thanks in adavance

will
bridgebuilder is offline   Reply With Quote
Old 06-02-2018, 02:57 PM   #2  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 66,352
Re: P0650 and P0801 codes

Does your SES light work? Does it come on for a few seconds when the key is first turned to "run"? All the engine related idiot light bulbs and the gauges get 12 volts from Fuse 9 "GAUGES", 10 amp. The SES light gets a ground from a driver in the PCM. The signal does not pass through the "solid state" component in the gauge cluster. The PCM monitors the driver to determine if the circuit has the correct voltage, and if it doesn't, sets P0650. The fuse feeds pin A3 on the cluster. The ground starts at PCM pin C2-46, passes through connector C230 and connects to pin A8 on the cluster.

What other problems are part of "the gauge cluster not working"? If the gauges and the idiot lights don't work, check the fuse.


When you replaced the PCM, did you specify you had an auto trans, so it would contain an A4 program? What specific problems are you having with the trans shifting?

Free download of the 2000 factory service manual, courtesy of GaryDoug:

http://www.mediafire.com/?40mfgeoe4ctti

The trouble codes, with schematics are in Volume 2, Part 2, pages 6-1705 (P0650) and 6-1710 (P0801). Auto trans codes are in Volume 3, Part 1. They are P07xx series and P18xx series. Did you personally pull the codes, or did a shop do it?


The dash/PCM schematics are in Volume 3, Part 2 starting on page 8-547.

Last edited by Injuneer; 06-02-2018 at 02:59 PM.
Injuneer is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Once DTC Codes are Reset When Will Monitor Set to Issue Codes? vez LS1 Based Engine Tech 6 11-01-2013 01:56 AM
What does the LT1 OBD1 codes/OBD2 codes read Rij1 LT1 Based Engine Tech 1 10-21-2011 06:37 AM
Switching from M6 codes to A4 codes Bykerboy869 Computer Diagnostics and Tuning 11 07-23-2011 12:44 PM
High IAC position and codes 33 and 21 thrown... camz383 LT1 Based Engine Tech 7 08-15-2007 10:05 AM
Codes 26, 27 and 77 and Fuse #6 Blown on 1995 Z28. HELP! <long> C Man LT1 Based Engine Tech 4 09-07-2004 07:03 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 01:33 AM.


Copyright © 1996-2017 CamaroZ28.com. All rights reserved.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.