Interesting Problem - OBDII Causing No Start
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Joined: May 2022
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Interesting Problem - OBDII Causing No Start
Hi all, I've been posting over at Sporstmobile Forum- a van specific page, but figured you all might be able to help. I have an '01 7.3 E350 California Van w/ 80,000 on the clock.
It runs and drives perfectly until I remove the scan gauge plugged into the OBDII port. Then it stalls. Without the scangauge plugged in, it will crank but not start. The actually gauge does not need to be plugged in for the van to start, only the OBDII connector.
I plugged in an edge CTS3 into the OBDII port and it still isn't starting. What could the scangauge plug be doing to make the van start, but not the EDGE CTS3?
I'm getting the four following codes:
PO562 - If the vehicle voltage level dips below 10.0 volts for 60 seconds or more while at idle, the PCM will store the code.
PO603 - The P0603 code indicates that yourPowertrain Control Module (PCM) has failed its own Keep Alive Memory (KAM) self-test.
P1000 - engine control computer (ECC) has not completed its emission systems testing.
P1316 - Injector Driver Module (IDM) Codes Detected.
Thank you all, I appreciate your help!
It runs and drives perfectly until I remove the scan gauge plugged into the OBDII port. Then it stalls. Without the scangauge plugged in, it will crank but not start. The actually gauge does not need to be plugged in for the van to start, only the OBDII connector.
I plugged in an edge CTS3 into the OBDII port and it still isn't starting. What could the scangauge plug be doing to make the van start, but not the EDGE CTS3?
I'm getting the four following codes:
PO562 - If the vehicle voltage level dips below 10.0 volts for 60 seconds or more while at idle, the PCM will store the code.
PO603 - The P0603 code indicates that yourPowertrain Control Module (PCM) has failed its own Keep Alive Memory (KAM) self-test.
P1000 - engine control computer (ECC) has not completed its emission systems testing.
P1316 - Injector Driver Module (IDM) Codes Detected.
Thank you all, I appreciate your help!
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
Do any or all of these codes repopulate after clearing them? As long as the PCM maintains power the codes can be stored indefinitely. So depending on the last time they were scanned and cleared we have no way of knowing when they actually occurred.
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
Is the dongle a Bluetooth type or corded to another device? Three of your codes can be linked to battery voltage more specifically power loss to the PCM. You might start with checking connections for all fuses related to the PCM plus the relays for the PCM and IDM. Not sure how accessible it is on the vans but checking the PCM connector where it passes through the firewall couldn't hurt either.
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It's corded. I'll check those fuses, and the PCM connector.
It seems odd that it would be a fuse when it starts up perfectly with the scan gauge OBDII plugged in, but not with the EDGE OBDII connector plugged in.
It seems odd that it would be a fuse when it starts up perfectly with the scan gauge OBDII plugged in, but not with the EDGE OBDII connector plugged in.
FTE Chapter Leader
Joined: Jan 2005
Posts: 13,124
Likes: 4,725
From: Henderson, NV
@udsuth78 , the Scangauge II has its own OBD II plug on a cord.
@maxswasser , I am surprised you are able to pull codes with the Scangauge II. Mine is not capable of pulling any codes from the truck. Just to clarify, starting with the key completely removed from the ignition, if the Scangauge II’s connector is not plugged into the van’s OBD II port the engine will crank but not start when you turn the key to start? When you say only the Scangauge II’s connector needs to be plugged in and not the gauge itself, you’re referring to the cord with the OBD II connector on one end and something like a ethernet connector on the other? Has it always been like this? Was there a time nothing was plugged into the OBD II port and the van started and ran fine?
At first blush, it sounds like you may have some damaged CANbus wiring that the OBD II connector is acting like a bandaid for. I will have to look at the manual to see what your issue might be.
Paging our resident van expert @FinnishStroker
@maxswasser , I am surprised you are able to pull codes with the Scangauge II. Mine is not capable of pulling any codes from the truck. Just to clarify, starting with the key completely removed from the ignition, if the Scangauge II’s connector is not plugged into the van’s OBD II port the engine will crank but not start when you turn the key to start? When you say only the Scangauge II’s connector needs to be plugged in and not the gauge itself, you’re referring to the cord with the OBD II connector on one end and something like a ethernet connector on the other? Has it always been like this? Was there a time nothing was plugged into the OBD II port and the van started and ran fine?
At first blush, it sounds like you may have some damaged CANbus wiring that the OBD II connector is acting like a bandaid for. I will have to look at the manual to see what your issue might be.
Paging our resident van expert @FinnishStroker
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Cargo Master
Joined: Mar 2019
Posts: 2,907
Likes: 788
From: Kinnula,Finland
I'm no good with electrical problems or body work.
Keep that connector plugged in and rock on..?
Measure voltages from OBD port pins?
Keep that connector plugged in and rock on..?
Measure voltages from OBD port pins?
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