Codes P1732 and P1728

Tiny
ANDY66
  • MEMBER
  • 2000 JEEP GRAND CHEROKEE
  • 4.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 147,000 MILES
Drove vehicle five hours from home this weekend and after fueling for return trip the transmission hesitated going to gear. There seemed to be two to three second delay before engaging. I drove another five miles and notice engine light on. Vehicle drove fine for the five miles but rpm seemed higher than normal at sixty five mph. I pulled into an O'Reilly's to check engine codes. I have P1732, P1728, P0731 and PP0734. These are codes for under drive pressure switch circuit, 2c hydraulic pressure switch circuit and gear one and four incorrect ratios.
The fluid level is good. Plus, I checked fuses. Now at O'Reillys the transmission will not engage unless I rev up the rpm.
Any one have experience with this problem? Wondering if it is transmission pressure sensor?
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Monday, May 29th, 2017 AT 12:13 PM

1 Reply

Tiny
STEVE W.
  • EXPERT
More than likely you have a bad solenoid pack in the trans. Or the valve body has a problem. Hard to test without all the special tools but those are the most common causes.
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Monday, May 29th, 2017 AT 7:07 PM

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