Jeep codes location of unit

All those codes refer to the transmission on an automatic gearbox. Looks like there's a fault on the gearbox electrics.

P1765=Transmission 12 volt supply relay control circuit.
P0753=Shift Solenoid "A" Electrical
P0743=Torque Converter Clutch Circuit Electrical

DTC P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient
Probably plugged passage's , not the EGR valve .
What type code reader are you using to read these codes ? I have factory service info. Doesn't show P0842 or P0642 , no such codes . You don't show what engine yours has , I'am assuming you have 3.5 L !
P0604
Control Module Random Access Memory (RAM)
PCM
DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610 in Engine Controls - 2.2L (L61)
or
DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610 in Engine Controls - 3.5L (LX9)

P0717
Input Speed Sensor Circuit Low Voltage
PCM
DTC P0717 in Automatic Transaxle - 4T40-E/4T45-E
P0741
Torque Converter Clutch (TCC) System - Stuck Off
PCM
DTC P0741 in Automatic Transaxle - 4T40-E/4T45-E
P0742
Torque Converter Clutch (TCC) System - Stuck On
PCM
DTC P0742 in Automatic Transmission - 4T40-E/4T45-E
P0748
Pressure Control (PC) Solenoid Control Circuit
PCM
DTC P0748 in Automatic Transmission - 4T40-E/4T45-E
P0751
1-2 Shift Solenoid (SS) Valve Performance - No First or Fourth Gear
PCM
DTC P0751 in Automatic Transmission - 4T40-E/4T45-E
P0752
1-2 Shift Solenoid (SS) Valve Performance - No Second or Third Gear
PCM
DTC P0752 in Automatic Transmission - 4T40-E/4T45-E
P0753
1-2 Shift Solenoid (SS) Control Circuit
PCM
DTC P0753 in Automatic Transmission - 4T40-E/4T45-E
P0756
2-3 Shift Solenoid (SS) Valve Performance - No First or Second Gear
PCM
DTC P0756 in Automatic Transmission - 4T40-E/4T45-E
P0757
2-3 Shift Solenoid (SS) Valve Performance - No Third or Fourth Gear
PCM
DTC P0757 in Automatic Transmission - 4T40-E/4T45-E
P0758
2-3 Shift Solenoid (SS) Control Circuit
PCM
DTC P0758 in Automatic Transmission - 4T40-E/4T45-E
P0815
Upshift Switch Circuit
PCM
DTC P0815 in Automatic Transmission - 4T40-E/4T45-E
P0816
Downshift Switch Circuit
PCM
DTC P0816 in Automatic Transmission - 4T40-E/4T45-E
P0826
Up and Down Shift Switch Circuit
PCM
DTC P0826 in Automatic Transmission - 4T40-E/4T45-E
P0973
1-2 Shift Solenoid (SS) Control Circuit Low Voltage
PCM
DTC P0973 in Automatic Transmission - 4T40-E/4T45-E
P0974
1-2 Shift Solenoid (SS) Control Circuit High Voltage
PCM
DTC P0974 in Automatic Transmission - 4T40-E/4T45-E
P0976
2-3 Shift Solenoid (SS) Control Circuit Low Voltage
PCM
DTC P0976 in Automatic Transmission - 4T40-E/4T45-E
P0977
2-3 Shift Solenoid (SS) Control Circuit High Voltage
PCM
DTC P0977 in Automatic Transmission - 4T40-E/4T45-E

Sometimes with code readers they get confused an just throw any old codes . Have it checked by someone with GM Tech 2 scan tool .

How To Fix Transmission A4CF2 Shift Problems / Check ...

? 18:46
https://www.youtube.com/watch?v=URUT3t8uUCw
Oct 27, 2014 - Uploaded by ProProjects
Thanks to ProProjects P0700 P0743 Torque Converter Clutch Circuit Electrical. ... P0765 - Shift Control Solenoid Valve D (Overdrive Solenoid) ... I have only two codes P0760 P0755 but my car is a mitsubishi galant 2.4 liters.

PDF]Technical Service Bulletin - RevBase

www.revbase.com/BBBMotor/Tsb//DownloadPdf?id=133873
Diagnostic Trouble Codes P0740, P0741, P0742, P0743, P0746, P0748, P0750,.P0755, P0760, P0765 or P0770 set ... P0700 - TCM MIL request signal.

P0743 Torque Converter Clutch TCC Solenoid Circuit Electrical P0753 Jeep 3 4 Shift Solenoid Relay

P0748 Jeep Governor Pressure Solenoid Circuit Condition

P1765 Dodge Gov Press Not Equal to Target not15 20 PSI

these are not sensors they are solenoids an are controlled by the TCM an all are located inside the transmission !

P1491 Rad Fan Control Relay Circuit An open or shorted condition detected in the radiator fan control relay control circuit. This includes PWM solid state relays.P1495 Leak Detection Pump Solenoid Circuit An open or shorted condition detected in the Leak Detection Pump (LDP) solenoid circuit.P0753 (M) Trans 3-4 Shift Sol/Trans Relay Circuits An open or shorted condition detected in the overdrive solenoid control circuit or Trans Relay Circuit in JTEC RE transmissions. Was MIL code 45. P0753 (M) Trans 3-4 Shift Sol/Trans Relay Circuits An open or shorted condition detected in the transmission 2-4 shift solenoid circuit (4-speed auto. trans. only).P0136 (M) 1/2 O2 Sensor Heater Circuit Malfunction Oxygen sensor heater element malfunction.

Aside from getting into an accident and having your wiring harness severely damaged, the other likely suspect is your PCM. These codes are not related to each other and indicate a much larger problem.

Go here - www.jeepforum.com/forum/f11/tech-faq-links-tsbs-89273/ - and find the AW-4 Service and Diagnostic Manual. Looks like you need to test some solenoids.

P0740 (M)Torq Con Clutch, No RPM Drop at Lockup. Relationship between engine and vehicle speeds indicated failure of torque convertor clutch lock-up system (TCC/PTU solenoid)
P0743 (M)Torque Converter Clutch Solenoid/ Trans Relay Circuits. An open or shorted condition detected in the torque convertor clutch (part throttle unlock) solenoid control circuit. Shift solenoid C electrical fault - Asin transmission
P0743 (M)Torque Converter Clutch Solenoid/ Trans Relay Circuits. An open or shorted condition detected in the torque convertor part throttle unlock solenoid control circuit (3 or 4-speed auto. trans. only).__________________
.
Rather than banning scary looking black semi-automatic sporting firearms, why don't we
identify and treat the nut jobs pulling the triggers, and put the criminals in jail ?

when diagnosing multiple fault codes it can be tricky figuring out whats going on for instance all three of the codes you have are an electrical nature and not mechanical faults in the transmission most likely they share a common power or ground circuit and have lost one or the other also if they do share any circuit and anyone of these are faulty it would generate the other codes. to do an accurate circuit check you should remove the transmission pan so you can check the terminals at the solenoids and switches on the valvebody because the problem could be in the "passthrough" connector

You must do the diagnostics for each code.
Here are the possibilitesP0740 DODGE - Torque Converter Clutch Circuithttp://engine-codes.com/p0740_dodge.htmlForum CodePossible causes- Low transmission fluid level
- Dirty transmission fluid
- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted
P0743 DODGE - Torque Converter Clutch Solenoid Circuithttp://engine-codes.com/p0743_dodge.htmlForum CodePossible causes- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted
- Low transmission fluid level
- Dirty transmission fluid

P0753 DODGEP0753 DODGE - 3-4 Shift Solenoid Relayhttp://engine-codes.com/p0753_dodge.htmlForum CodePossible causes- Faulty shift solenoid valve
- Shift solenoid valve harness or connectors
- Shift solenoid valve circuit is open or shorted
- Low transmission fluid level
- Dirty transmission fluid

The Solenoid circuit is part of Emission control.To get more info i suggest you to check the two help links given below:---Click the link below:----How to replace Leak detection pump solenoid circuit?
http://repairhelpcenter.blogspot.in/2012/05/leak-detection-pump-solenoid-circuit.html
-----------------P1495 Leak Detection Pump Solenoid Circuit?
http://howtobyme.blogspot.in/2012/05/p1495-leak-detection-pump-solenoid.html

-----------------
This will help.
Thanks.

Both fault codes refer at Tnasmission problem...

P0743 - Torque Converter Circuit Electrical
This DTC appears when an open or shorted condition is detected in the TCC (Torque Converter Clutch) solenoid control circuit; check this as possible causes:
- fused ignition switch output circuit open
- torque converter clutch solenoid defective
- TCC solenoid circuit w/h intermittent defect
- TCCsolenoid circuit w/h observable defect
- TCC solenoid control circuit open
- TCC solenoid control circuit short to ground
- PCM defective (TCC solenoid control circuit)

You will need remove the cover/pan to inspect the harness that goes to all the solonoids and then to inspect the valvebody and the TCC solonoid itself. If you have a multimeter then you could ohm through the harness and even the solonoid. I have found that most of the time this code was produced because of the solonoid itself. But it could be the circuits to it also. There is abig connector an top of the trans that goes into the trans and the internal harness ispect that connector for any corrosion or damaged pins or wires.


P0753 - Shift Solenoid A Electrical Malfunction
This is a common repair that I have replaced several of the solenoid but it is not a cronic problem. It be the wire going to the solenoid shorted so make sure that is check before the transmission is tilted down and the side cover removed. 90% it is just the solenoid; the solenoid is located in the side pan of the tranmission. It would mean lowering the cradle(what the engine and transmission sit on) and lowering the transmission down about one to two feet. Check this like a possible cause:
- 1-2 shift solenoid control circuit is open or shorted to ground
- 1-2 shift solenoid control circuit is shorted to voltage
- 1-2 shift solenoid has failed
- PCM has failed

You will need to remove the transmission pan and its the solenoid with the red and light green wires going to it. Let us know if you have questions contact us here.

Hope this helps and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer. Thank you for using FixYa.

Jose.