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Old 03-28-2010, 09:57 AM   #1
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Default P0230 Primary Fuel Pump Circuit

My car quit on me today so I pulled out my laptop and pulled this code p0230. Fuel pump will not prime and I cannot get it to start. If I jump the fuel relay it starts fine but not when commanded from the pcm. I tried to turn it on with the scanner controls but no dice. The pump runs fine otherwise, so does this mean the fuel pump driver in my pcm is fried or what?
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Old 03-28-2010, 11:16 AM   #2
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It's probably VATs.
Try cleaning the key "pellet" or push the key inwards it may not be fully seated in the ignition switch.
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Old 03-29-2010, 02:42 PM   #3
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Quote:
Originally Posted by shoemike View Post
It's probably VATs.
Try cleaning the key "pellet" or push the key inwards it may not be fully seated in the ignition switch.
It's not the vats, there is no security light on and it starts when I put the batterty charger on it. I bought a brand new battery and its still having issues. I'm thinking its a ground problem since the battery is in the back.
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Old 03-29-2010, 02:44 PM   #4
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I jumped it again at the relay so I could move it, the pump runs strong, so something else wierd is going on.
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Old 03-29-2010, 08:59 PM   #5
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Replace the relay.
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Old 03-29-2010, 09:12 PM   #6
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Troubleshoot the problem with a meter or test light. It's a simple circuit and you said you have the ability to command the pump on.

http://www.gearchatter.com/viewtopic9151.php

http://www.gearchatter.com/si/372984.png
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Old 03-30-2010, 06:26 AM   #7
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Quote:
Originally Posted by 2xLS1 View Post
Troubleshoot the problem with a meter or test light. It's a simple circuit and you said you have the ability to command the pump on.

http://www.gearchatter.com/viewtopic9151.php

http://www.gearchatter.com/si/372984.png
Replaced the relay already and tested it with a dovm.
no dice. Not getting 12v at the relay from the PCM even when commanded.
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Old 03-30-2010, 03:19 PM   #8
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Find the open circuit in circuit 465.
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Old 03-30-2010, 05:03 PM   #9
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Quote:
Originally Posted by joecar View Post
Find the open circuit in circuit 465.
What is circuit 465?
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Old 03-31-2010, 10:38 AM   #10
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The 2nd url in post #6 (posted by 2xLS1) is a circuit schematic:

Quote:
Originally Posted by 2xLS1
this schematic shows circuit 465 is the PCM fuel pump relay signal... i.e. the PCM 12V at the relay.

If you don't get this voltage at the relay, then you have to check if that wire is broken.
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Old 03-31-2010, 04:10 PM   #11
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Quote:
Originally Posted by joecar View Post
The 2nd url in post #6 (posted by 2xLS1) is a circuit schematic:



this schematic shows circuit 465 is the PCM fuel pump relay signal... i.e. the PCM 12V at the relay.

If you don't get this voltage at the relay, then you have to check if that wire is broken.
Yea, thats my next step, if I can't find a broken wire anywhere then it looks like my pcm may be fried.
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Old 03-31-2010, 09:18 PM   #12
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Also check that the pins in the relay socket and the PCM connector are good and make contact... PCM is last resort.
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Old 04-06-2010, 03:53 PM   #13
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Looks like my PCM is toasted no fire to the fuel pump. I disconnected the red connector and applied 12v to it and the pump ran fine. I went ahead and ordered a replacement PCM and now I'm waiting on it to come in so I can reflash my tune into it. This is the first time I've actually seen a PCM failure, I'm wondering what caused to fail.
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Old 04-07-2010, 03:56 AM   #14
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Look at the PCM connector and the harness connector... do any pins show signs of burning or bending/breaking...?
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Old 04-07-2010, 02:58 PM   #15
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Quote:
Originally Posted by joecar View Post
Look at the PCM connector and the harness connector... do any pins show signs of burning or bending/breaking...?
No damage at all, it looks brand new, its never been removed from the car.
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Old 04-08-2010, 06:26 AM   #16
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I actually saw this exact thing 4 or 5 years ago - flashed a borrowed PCM from another car to test it - it was a problem in the PCM... thought for srue it would have been the harness or pins - tried the PCM first cause it was quick and easy. Odd, but it happens...
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Old 01-22-2013, 12:38 PM   #17
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same problem with my 2010 tds , wont start..i check realays and fuses..fuel pump relay it was melt and burn..i replace it and it was fine for 3 days..and then dies..again..when i give power to relay works fine...possible pcm? or ignition key??
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Old 01-22-2013, 12:38 PM
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2002, 2010, camaro, circuit, codes, diagram, firebird, ford, fuel, ls1, p0230, primary, pump, pumps, relay, schematic, switch, wiring


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