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Powertrain code references — Page 20.

Engine, transmission and powertrain diagnostic references. Exact vehicle and module context still matters.

9,891 code references in powertrain

Generic OBD-II
P0770

Solenoid E open-circuit monitoring is based on driver evidence

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Generic OBD-II
P0771

Solenoid E failed-off functionality can remain relevant after a good event

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Generic OBD-II
P0772

Solenoid E failed-on behavior is distinct from a high circuit signal

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Generic OBD-II
P0773

The CW6A-EL on/off solenoid electrical circuit

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Generic OBD-II
P0774

Intermittent E-channel circuitry needs its own event evidence

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Generic OBD-II
P0775

Quest solenoid B command and feedback must agree

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Generic OBD-II
P0776

CVT primary-pulley pressure fails to follow a high command

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Generic OBD-II
P0777

C2 release behavior behind the solenoid B stuck-on code

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Generic OBD-II
P0778

Solenoid B feedback current fails to follow its target

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Generic OBD-II
P0779

Pressure Control Solenoid B Intermittent

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Generic OBD-II
P077A

Output Shaft Speed Sensor Circuit - Loss of Direction Signal

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Generic OBD-II
P077B

Output speed can have the right magnitude and the wrong direction

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Generic OBD-II
P077C

output-speed circuit voltage drops below its electrical boundary

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Generic OBD-II
P077D

output-speed sensor voltage is electrically too high

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Generic OBD-II
P077E

Transmission Fluid Temperature Measurement System - Multiple Sensor Correlation

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Generic OBD-II
P077F

Reverse 2 Incorrect Ratio

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Generic OBD-II
P0780

Quest shift performance requires more than an electrical code check

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Generic OBD-II
P0781

1-2 Shift

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Generic OBD-II
P0782

The second-to-third shift fails its speed plausibility check

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Generic OBD-II
P0783

the Jeep 3–4 shift did not produce the expected speed change

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Generic OBD-II
P0784

4-5 Shift

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Generic OBD-II
P0785

Shift Timing Solenoid A

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Generic OBD-II
P0786

Shift-timing solenoid current error under a stable command

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Generic OBD-II
P0787

Timing solenoid feedback stays low when commanded on

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Generic OBD-II
P0788

Timing-solenoid circuit stays high under an off command

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Generic OBD-II
P0789

Shift Timing Solenoid A Intermittent

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Generic OBD-II
P078A

Shift Timing Solenoid B

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Generic OBD-II
P078B

Shift Timing Solenoid B Range/Performance

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Generic OBD-II
P078C

Shift Timing Solenoid B Low

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Generic OBD-II
P078D

Shift Timing Solenoid B High

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Generic OBD-II
P078E

Shift Timing Solenoid B Intermittent

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Generic OBD-II
P078F

Transmission Mode Switch C Circuit

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Generic OBD-II
P0790

Normal/Performance Switch Circuit

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Generic OBD-II
P0791

Intermediate-speed circuit A must not be confused with its plausibility checks

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Generic OBD-II
P0792

clutch-1 speed checked against independent references

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Generic OBD-II
P0793

Intermediate Shaft Speed Sensor A Circuit No Signal

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Generic OBD-II
P0794

Intermediate-speed A intermittency needs more than an averaged speed trace

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Generic OBD-II
P0795

Quest solenoid C links converter lockup and shift pressure

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Generic OBD-II
P0796

CVT line-pressure performance compares both pulley pressures

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Generic OBD-II
P0797

GR10 solenoid C stuck-on criteria differ from adjacent clutches

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Generic OBD-II
P0798

SLC2 current feedback differs persistently from demand

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Generic OBD-II
P0799

Pressure Control Solenoid C Intermittent

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Generic OBD-II
P079A

Clutch one slip is evaluated while the clutch is loaded and filled

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Generic OBD-II
P079B

Clutch two has a one-second loaded-slip criterion

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Generic OBD-II
P079C

Clutch three uses a lower slip threshold than C1 and C2

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Generic OBD-II
P079D

Clutch four is judged over a short slip interval

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Generic OBD-II
P079E

Clutch 5 slips despite a locked-state command

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Generic OBD-II
P079F

Transmission Friction Element F Slip Detected

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Generic OBD-II
P07A0

Transmission Friction Element G Slip Detected

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Generic OBD-II
P07A1

Transmission Friction Element H Slip Detected

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Generic OBD-II
P07A2

Transmission Friction Element A Performance/Stuck Off

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Generic OBD-II
P07A3

A clutch that should release can be detected by unexpectedly low slip

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Generic OBD-II
P07A4

Transmission Friction Element B Performance/Stuck Off

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Generic OBD-II
P07A5

Mode-one clutch-two behavior distinguishes a stuck element

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Generic OBD-II
P07A6

Transmission Friction Element C Performance/Stuck Off

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Generic OBD-II
P07A7

Clutch-three release is evaluated against mode-two torque behavior

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Generic OBD-II
P07A8

Transmission Friction Element D Performance/Stuck Off

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Generic OBD-II
P07A9

Clutch four has different stuck-on tests in two hybrid modes

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Generic OBD-II
P07AA

Transmission Friction Element E Performance/Stuck Off

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Generic OBD-II
P07AB

Clutch 5 does not develop the expected release slip

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Generic OBD-II
P07AC

Transmission Friction Element F Performance/Stuck Off

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Generic OBD-II
P07AD

Transmission Friction Element F Stuck On

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Generic OBD-II
P07AE

Transmission Friction Element G Performance/Stuck Off

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Generic OBD-II
P07AF

Transmission Friction Element G Stuck On

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Generic OBD-II
P07B0

Transmission Friction Element H Performance/Stuck Off

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Generic OBD-II
P07B1

Transmission Friction Element H Stuck On

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Generic OBD-II
P07B2

Transmission Park Position Sensor/Switch A Circuit/Open

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Generic OBD-II
P07B3

Park-button switch A reads below its allowed range

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Generic OBD-II
P07B4

Park-button switch A high-signal qualification

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Generic OBD-II
P07B5

Park switch A sits between valid button states

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Generic OBD-II
P07B6

Transmission Park Position Sensor/Switch A Circuit Performance High

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Generic OBD-II
P07B7

Parking-lock input A frequency and mismatch need separate attention from pulse level

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Generic OBD-II
P07B8

Transmission Park Position Sensor/Switch B Circuit/Open

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Generic OBD-II
P07B9

Park-button channel B low-input detection

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Generic OBD-II
P07BA

Park-button switch B exceeds the high-signal boundary

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Generic OBD-II
P07BB

Park-button switch B has an unrecognized intermediate reading

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Generic OBD-II
P07BC

Transmission Park Position Sensor/Switch B Circuit Performance High

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Generic OBD-II
P07BD

Parking-lock input B has its own frequency or mismatch classification

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Generic OBD-II
P07BE

two valid Park-button channels disagree

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Generic OBD-II
P07BF

input-speed circuit low is distinct from low input RPM

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Generic OBD-II
P07C0

input-speed sensor voltage exceeds the high-input limit

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Generic OBD-II
P07C1

Input/Turbine Shaft Speed Sensor B Circuit Low

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Generic OBD-II
P07C2

Input/Turbine Shaft Speed Sensor B Circuit High

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Generic OBD-II
P07C3

Input/Turbine Shaft Speed Sensor C Circuit Low

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Generic OBD-II
P07C4

Input/Turbine Shaft Speed Sensor C Circuit High

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Generic OBD-II
P07C5

odd-clutch speed input voltage below range

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Generic OBD-II
P07C6

Intermediate speed A high includes pulse-quality checks

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Generic OBD-II
P07C7

Intermediate speed B low is an average signal-voltage check

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Generic OBD-II
P07C8

Intermediate speed B high can also report implausible pulse encoding

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Generic OBD-II
P07C9

Intermediate Shaft Speed Sensor C Circuit Low

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Generic OBD-II
P07CA

Intermediate Shaft Speed Sensor C Circuit High

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Generic OBD-II
P07CB

Transmission Fluid Thermostat Performance

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Generic OBD-II
P07CC

Transmission Mode Switch C Circuit Low

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Generic OBD-II
P07CD

Transmission Mode Switch C Circuit High

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Generic OBD-II
P07CE

tour-mode request remains asserted too long

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Generic OBD-II
P07CF

Transmission Mode Switch D Circuit Low

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Generic OBD-II
P07D0

Transmission Mode Switch D Circuit High

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Generic OBD-II
P07D1

comfort-mode switch input stays true beyond the monitor interval

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Generic OBD-II
P07D2

Transmission Mode Switch E Circuit Low

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Generic OBD-II
P07D3

Transmission Mode Switch E Circuit High

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These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.