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Old 04-05-2012, 04:42 AM   #1
seanpsills's Avatar
Join Date: Jun 2011
Location: Hawkinsville, GA
Posts: 39
Code p0551?

My TJ popped another code out today. The guys at O'Reilly's checked it on the computer and said it was a p0551 dealing with the power steering sensor. I researched it on this site and I take it that it raises the engine idle up when turning sharp left or right. Now the question is, what do I need to replace to do away with the check engine light? The guy cleared it but I came right back on about 8 hours later.

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Old 04-05-2012, 09:32 AM   #2
Join Date: Apr 2012
Posts: 15
Have you noticed your rpms increasing (thereby increasing pump output/pressure) when you turn sharp left or right? You have a code, but have you noticed the Jeep acting different. Trying to find out if you've noticed the sensor doing it's job or not, is it working?

The easiest thing to do would be to get another sensor and see if that fixes it. Although you could be doing so unnecessarily if your current sensor is not the problem.

You might want to start with the circuit and check that you have the proper voltage and good ground at the sensor plug to rule out an electrical problem before the sensor.
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