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Transmission Diagnostic Trouble Codes


Vehicles 1996 and newer are OBD-II compliant - meaning these vehicles are equipped with an on-board diagnostics system called OBD-II.  The OBD-II system monitors various vehicle systems and subsystems and sets a diagnostic trouble code (DTC) when a problem (or fault) is detected.  Your vehicle's check engine light turns on when a diagnostic trouble code is set.

When the check engine light illuminates, an OBD-II scanner is used to retrieve the diagnostic trouble code(s) that are stored in the system.  The most common diagnostic trouble codes begin with the letter "P", which stands for Powertrain.  Powertrain (or "P") DTCs include the engine, transmission and emissions systems.

Diagnostic Trouble Codes P0700 through P0799 are transmission related codes.  Any code within this range point to a transmission related fault.

Diagnostic Trouble Codes P0700 thru P0799
P0700....Transmission Control System (MIL Request)
P0701....Transmission Control System Range/Performance
P0702....Transmission Control System Electrical
P0703....Torque Converter/Brake Switch B Circuit
P0704....Clutch Switch In put Circuit Malfunction
P0705....Transmission Range Sensor Circuit Malfunction (PRNDL Input)
P0706....Transmission Range Sensor Circuit Range/Performance

P0707....Transmission Range Sensor Circuit Low Input
P0708....Transmission Range Sensor Circuit High Input
P0709....Transmission Range Sensor Circuit intermittent
P0710....Transmission Fluid Temperature Sensor Circuit
P0711....Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712....Transmission Fluid Temperature Sensor Circuit Low Input P0713....Transmission Fluid Temperature Sensor Circuit High Input P0714....Transmission Fluid Temperature Sensor Circuit Intermittent P0715....Input/Turbine Speed Sensor Circuit
P0716....Input/Turbine Speed Sensor Circuit Range/Performance 

P0717....Input/Turbine Speed Sensor Circuit No Signal
P0718....Input/Turbine Speed Sensor Circuit Intermittent
P0719....Torque Converter/Brake Switch B Circuit Low
P0720....Output Speed Sensor Circuit
P0721....Output Speed Sensor Circuit Range/Performance
P0722....Output Speed Sensor Circuit No Signal
P0723....Output Speed Sensor Circuit Intermittent
P0724....Torque Converter/Brake Switch B Circuit High
P0725....Engine Speed Input Circuit
P0726....Engine Speed Input Circuit Range/Performance
P0727....Engine Speed Input Circuit No Signal
P0728....Engine Speed Input Circuit Intermittent
P0730....Incorrect Gear Ratio
P0731....Gear 1 Incorrect Ratio
P0732....Gear 2 Incorrect Ratio
P0733....Gear 3 Incorrect Ratio
P0734....Gear 4 Incorrect Ratio
P0735....Gear 5 Incorrect Ratio
P0736....Reverse Incorrect Ratio
P0737....TCM Engine Speed Output Circuit
P0739....TCM Engine Speed Output Circuit Low
P0739....TCM Engine Speed Output Circuit High
P0740....Torque Converter Clutch Circuit
P0741....Torque Converter Clutch Circuit Performance or Stuck Off
P0742....Torque Converter Clutch Circuit Stuck On
P0743....Torque Converter Clutch Circuit Electrical
P0744....Torque Converter Clutch Circuit Intermittent
P0745....Pressure Control Solenoid 'A'
P0746....Pressure Control Solenoid 'A' Performance or Stuck Off
P0747....Pressure Control Solenoid 'A' Stuck On
P0748....Pressure Control Solenoid 'A' Electrical
P0749....Pressure Control Solenoid 'A' Intermittent
P0750....Shift Solenoid 'A'
P0751....Shift Solenoid 'A' Performance or Stuck Off
P0752....Shift Solenoid 'A' Stuck On
P0753....Shift Solenoid 'A' Electrical
P0754....Shift Solenoid 'A' Intermittent
P0765....Shift Solenoid 'B'
P0756....Shift Solenoid 'B' Performance or Stuck Off
P0757....Shift Solenoid 'B' Stuck On
P0758....Shift Solenoid 'B' Electrical
P0759....Shift Solenoid 'B' Intermittent
P0760....Shift Solenoid 'C'
P0761....Shift Solenoid 'C' Performance or Stuck Off
P0762....Shift Solenoid 'C' Stuck On
P0763....Shift Solenoid 'C' Electrical
P0764....Shift Solenoid 'C' Intermittent
P0765....Shift Solenoid 'C'
P0766....Shift Solenoid 'D' Performance or Stuck Off
P0767....Shift Solenoid 'D' Stuck On
P0768....Shift Solenoid 'D' Electrical
P0769....Shift Solenoid 'D' Intermittent
P0770....Shift Solenoid 'E'
P0771....Shift Solenoid 'E' Performance or Stuck Off
P0772....Shift Solenoid 'E' Stuck On
P0773....Shift Solenoid 'E' Electrical
P0774....Shift Solenoid 'E' Intermittent
P0775....Pressure Control Solenoid 'B'
P0776....Pressure Control Solenoid 'B' Performance or Stuck Off
P0777....Pressure Control Solenoid 'B' Stuck On
P0778....Pressure Control Solenoid 'B' Electrical
P0779....Pressure Control Solenoid 'B' Intermittent
P0781....1-2 Shift
P0782....2-3 Shift
P0783....3-4 Shift
P0784....4-5 Shift
P0785....Shift/Timing Solenoid
P0786....Shift/Timing Solenoid Range/Performance
P0787....Shift/Timing Solenoid Low
P0788....Shift/Timing Solenoid High
P0789....Shift/Timing Solenoid Intermittent
P0790....Normal/Performance Switch Circuit
P0791....Intermediate Shaft Speed Sensor Circuit
P0792....Intermediate Shaft Speed Sensor Circuit Range/Performance
P0793....Intermediate Shaft Speed Sensor Circuit No Signal
P0794....Intermediate Shaft Speed Sensor Circuit Intermittent
P0795....Pressure Control Solenoid 'C'
P0796....Pressure Control Solenoid 'C' Performance or Stuck off
P0797....Pressure Control Solenoid 'C' Stuck On
P0798....Pressure Control Solenoid 'C' Electrical
P0799....Pressure Control Solenoid 'C' Intermittent

A Library of "Do-it-Yourself" Service and Repair Guides 

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Transmission Rebuild Cost
Does your transmission need rebuilt? Fair price guide for the price range of a transmission rebuild.

Remanufactured Transmission Options and Cost
Considering a remanufactured transmission? Here are costs and options for how to purchase.

Get a Free Transmission Estimate by Email
Want an estimate for a remanufactured transmission? Fill out the form here to get an estimate via e-mail.

How to Replace a Transmission Torque Converter Clutch Solenoid
What is a transmission torque converter clutch solenoid and how to replace one if it goes bad.

How to Replace a Transmission Pressure Control Solenoid
What is a transmission pressure control solenoid and how to replace one if it goes bad.

How to Replace Transmission Solenoids
Guide to various automatic transmission solenoids, how they work, and DIY instructions.

How to Know Which Transmission Fluid to Use?
What fluid type do you need for your specific transmission? Use this guide to find out.

How to Remove and Install an Automatic Transmission - (RWD)
If you facing a transmission replacement, you can reduce the cost considerably by removing and re-installing the transmission yourself.  Here we provide step-by-step instructions for remove and replacing a transmission. 

How to Replace a Transmission Speed Sensor
For most vehicles, the speed sensor is plugged into the transmission (or transaxle).  When the speed sensor fails the speedometer stops working and shifts may become erratic.  Replacing a speed sensor is easy.

How to Locate and Fix an Automatic Transmission Fluid Leak
Vehicle owners become aware of a transmission fluid leak either when checking the fluid level and seeing that it is low or seeing a red colored fluid on their driveway or garage floor.

How to Release a Shifter Lever That is Stuck in Park
Nothing is more frustrating that getting into your car and the gear shifter lever being locked in Park.  Here we explain how to release the shifter, the causes, how to repair and the estimated cost.

How to Install an Automatic Transmission Oil Cooler
Installing an auxiliary transmission oil cooler can protect your transmission from overheating and failure. Excessive heat can ruin a perfectly good transmission very quickly. Coolers are inexpensive and easy to install.  

How to Change the Fluid and Filter in an Automatic Transmission
Keeping clean fresh fluid in your transmission is the number one thing you can do to protect the transmission from premature failure.  These DIY transmission fluid and filter change procedures are easy to follow.

How to Check the Condition of your Automatic Transmission Fluid
Learn how to check the condition of transmission fluid, what the different conditions mean and what, if anything, you need to do to keep your transmission running smooth.

How to Check Your Automatic Transmission Fluid Level
Learn the correct procedure for checking transmission fluid level.  Many people do it wrong, so here is the easy way.

How to Replace a Transmission Neutral Safety Switch
The neutral safety switch is a safety feature that prevents the engine from starting when the transmission or transaxle is in gear.  When the switch fails, the engine may not crank or it may start in gear.

How to Flush Your Automatic Transmission
A transmission fluid flush can be performed without a transmission flush machine - and it's safer for high mileage vehicles.

What Transmission Do I Have?
A guide to determining which transmission model you have based on the year, make, model and engine size.

What is Limp Mode?
When a transmission fault is detected by the OBD-II system, the transmission may go into fail-safe (or "limp" mode as it is also called) in order to protect the transmission from internal damage

Common Transmission Problems and Solutions
Most vehicle problems, including automatic transmission problems, reveal themselves in one way or another. Learning to recognize these warning signs can save you a great deal of money and vehicle down time.

Transmission Diagnostic Trouble Codes
Diagnostic Trouble Codes P0700 through P0799 are transmission related OBD-II codes.  Any code within this range point to a transmission related fault..

How to Inspect and Repair CV Axles and CV Joints
CV (constant-velocity) axles, (also known as half-shafts), are used in front-wheel drive vehicles to transfer the engine’s power from the transaxle to the two drive wheels. 

Auto Repair Safety
When working on or around any vehicle injuries can and do occur.  Please read these Safety Precautions before starting your next automotive service/repair project.

Fix the following errors: