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Limp mode and code p0765

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Old 05 Sep 2016, 12:22 pm
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Default Limp mode and code p0765

2001 PT cruiser 125k on it, my nephew bought it in limp mode and with the p0765 code. the solenoid valve was changed and made no difference. no fuses have been blown and the relay has checked out OK.
Is there a common issue with this that I should be looking for at the start? and is there a common diagnostic process to eliminate components?? thanks for any insight.
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Old 06 Sep 2016, 01:51 am
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Join Date: Oct 2015
Location: Abbotsford, British Columbia.
Posts: 764
Default Re: Limp mode and code p0765

strange. in my 03 manual they don't even have a 765 code to look up. i can only get 700 and 703
which are related to the brake switch fault, and a transmission code, respectively.
2003 GT M/T in Onyx Green Pearl on Michelin Pilot Sport AS 3 Plus Tires 205/50ZR17. Dark Slate Gray Interior. OEM cargo net, parcel shelf, slush mats and trunk protector, mud flaps, mopar subwoofer. Platinum edition pedals, Neon SX 2.0 steering wheel with black+grey wrapped leather cover. Generic lowering springs, KYB gas shocks, Valeo solid flywheel conversion and clutch kit. Urethane insert engine mounts. Energy suspension full body urethane bushing kit. Chrysler premium front speakers, Jenson 6x9 rears. Boston Audio 4x55W amp. Panasonic head unit with xtenzi bluetooth. 300W AC power inverter. Escort 360max and Escort Shifter ZR4, dual front+rear dash camera. stage 1 blow off valve and syked tune computer . Boost and oil pressure gauges with Turbo-Timer. Needswings 3" exhaust elbow, Electric valve actuated Y-pipe with catalytic converter. To do: coilovers, 2step controller, quaife diff, Air-Fuel Meter
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Old 06 Sep 2016, 01:55 am
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Location: Thousand Oaks, CA
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Default Re: Limp mode and code p0765

P0765 - A/T Underdrive Solenoid Circuit problem:

Possible Causes:

1. Underdrive Solenoid control circuit is open or shorted to ground
2. Underdrive Solenoid control circuit is shorted to system power
3. Underdrive Solenoid is damaged or has failed
4 .TCM or PCM has failed

The underdrive clutch solenoid valve is turned on or off by the Transmission Control Module in response to signals sent from the park/neutral position switch, vehicle speed and Engine Control Module.
If at First You Don't Succeed - Try, Try Again
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