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Codes P0300 and P0203?

 
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Old 07 Mar 2013, 07:04 pm
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Default Codes P0300 and P0203?

My daughter car has been running food since I replace the cam sensor last fall. I've put in new fuel pump, cam sensor, crank sensor, timing belt, water pump, plugs, wires and both O2 sensors. It's run good since October now it quit a couple of times and threw these codes along with the O2 sensor codes. What's the general cause of these codes, it has quit two times now. Once it started right back up, the other time it took about five minutes before it started.

Bob
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Old 07 Mar 2013, 07:14 pm
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Default Re: Codes P0300 and P0203?

Here's some answers I found in a search:

Chrysler PT Cruiser 2004 pt cruiser .po300 p0201 p0202 p0203 - JustAnswer

OBD-II Trouble Code: P0203 Cylinder 3 Injector Circuit Malfunction

code p0300 means ??

2004 2.4 turbo with dtc p0303 & p0300, 53K Miles
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Old 07 Mar 2013, 08:51 pm
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Default Re: Codes P0300 and P0203?

Crewzin,

Thanks for the links. In the first link what is the ASD relay?
Bob
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Old 07 Mar 2013, 09:02 pm
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Default Re: Codes P0300 and P0203?

It stands for Auto Shut Down. If you have the 01-05 cruiser, it's the No#13 fuse in the engine compartment. If you have the 06-10 PT, there's 3 ASD relay: #18, 23 and #32.

This relay is controlled by the PCM and supplies +12V to the fuel injectors, O2 sensor, coil, and fuel pump.
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Old 09 Mar 2013, 03:19 pm
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Default Re: Codes P0300 and P0203?

I changes brake pads on my daughter's 04 Cruiser today. So, I decided to see if I could find what made it keep quitting. The injectors are all working, but I could hear a vacuum hissing sound. Finally found out that the small vacuum hose coming off the brake booster was disconnected. I figured a cat may have gotten in there and pulled it off. I asked if there were any stray cats running around where she lives and she said there was.

I don't know whether that would cause the codes and make the car stall, but we'll see.

Bob
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