Question about 2003 Dodge Neon

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2003 Dodge Neon Code P0551 and Rough Idle

I have a 2003 Dodge Neon with 140xxx miles on it. It has been idling rough lately and the mil came on the other day when I was driving about 35 mph. I went to autozone and had them pull the code. It came back as P0551: Power Steering Pressure Sensor Circuit range/performance. Now I read on some forums that the pcm will raise the idle speed based on readings from the power steering pressure sensor to prevent the engine from stalling or idling rough. So based on my understanding the power steering pressure switch has gone bad or a wire in that circuit has bad continuity. Is this correct? I just don't want to start throwing money around without knowing exactly what is wrong.

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This is either the sensor or an open/shorted circuit leading to the sensor, you need to use a dvom to check it or replace the sensor and atleast eliminate that fault

Posted on Feb 26, 2011

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SOURCE: 2003 Dodge Neon Code P0551 and Rough Idle

I HAD THE SAME PROBLEM WITH MY 2002 DODGE NEON. THE FIX WAS TO REPLACE THE POWER STEERING PRESSURE SENSOR SWITCH. IF YOU DO IT YOURSELF IT WILL PROBABLY COST ABOUT $50 OR $60 INCLUDING THE HAYNES MANUAL TELLING YOU HOW TO DO IT. I BELIEVE THE SWITCH COST ME ABOUT $30 OR $35 FROM A DODGE DEALER. IT IS PRETTY SIMPLE. TAKE OFF THE ELECTRICAL CONNECTION GOING TO THE SWITCH AND THEN TAKE OUT THE SWITCH ITSELF WITH A PROPER SIZED WRENCH. THE SWITCH IS THREADED INTO A CONNECTION ATTACHED TO METAL HOSES THAT HAVE POWER STEERING FLUID IN THEM. HAVE THE NEW SWITCH READY TO PUT IN AFTER THE OLD ONE COMES OUT,FOR POWER STEERING FLUID WILL FLOW OUT OF THE CONNECTION. PUT THREAD TAPE ON THE THREADS OF THE NEW CONNECTION. THIS WIIL HELP TO SEAL THE SWITSH FROM LEAKS. TORQUE TO SPECS AND REINSTALL THE ELECTRICAL CONNECTION. CLEAR THE CODE AND SEE IF IT COMES BACK. MINE DID NOT. OH YES, IT MIGHT BE A GOOD IDEA TO HAVE SOME POWER STEERING FLUID TO TOP OFF ANY THAT LEAKS OUT DURING THIS PROCESS.
GOOD LUCK!

Posted on Dec 07, 2010

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I HAD THE SAME PROBLEM WITH MY 2002 DODGE NEON. THE FIX WAS TO REPLACE THE POWER STEERING PRESSURE SENSOR SWITCH. IF YOU DO IT YOURSELF IT WILL PROBABLY COST ABOUT $50 OR $60 INCLUDING THE HAYNES MANUAL TELLING YOU HOW TO DO IT. I BELIEVE THE SWITCH COST ME ABOUT $30 OR $35 FROM A DODGE DEALER. IT IS PRETTY SIMPLE. TAKE OFF THE ELECTRICAL CONNECTION GOING TO THE SWITCH AND THEN TAKE OUT THE SWITCH ITSELF WITH A PROPER SIZED WRENCH. THE SWITCH IS THREADED INTO A CONNECTION ATTACHED TO METAL HOSES THAT HAVE POWER STEERING FLUID IN THEM. HAVE THE NEW SWITCH READY TO PUT IN AFTER THE OLD ONE COMES OUT,FOR POWER STEERING FLUID WILL FLOW OUT OF THE CONNECTION. PUT THREAD TAPE ON THE THREADS OF THE NEW CONNECTION. THIS WIIL HELP TO SEAL THE SWITSH FROM LEAKS. TORQUE TO SPECS AND REINSTALL THE ELECTRICAL CONNECTION. CLEAR THE CODE AND SEE IF IT COMES BACK. MINE DID NOT. OH YES, IT MIGHT BE A GOOD IDEA TO HAVE SOME POWER STEERING FLUID TO TOP OFF ANY THAT LEAKS OUT DURING THIS PROCESS.
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