What does Engine code P0734 mean?

Gear 4 Incorrect Ratio
Diagnostic trouble code (DTC) P0734 stands for “Gear 4 Incorrect Ratio.” It is triggered once your PCM detects that the RPM difference between the rotational speed of your input speed sensor and the transmission output speed sensor doesn’t match what the ECM/PCM expects to see in 4th gear.

What can cause incorrect gear ratio?

The incorrect gear ratio code may have several causes: Bad or dirty fluid in the transmission. … Broken mechanical components within transmission. Internal blockage in fluid lines.

What does gear 4 Incorrect Ratio Mean?

Error Code P0734 is described as Gear 4 Incorrect Ratio. This refers to a problem in the fourth gear of the automatic transmission, usually caused by dirty or not enough transmission fluid or issues with the solenoid.

What does gear 2 incorrect ratio mean?

Error Code P0732 is described as Gear 2 Incorrect Ratio. This means there’s a problem with the automatic transmission on the second gear, usually caused by problems with the solenoid or dirty transmission fluid.

How do you fix a transmission control malfunction?

Possible resolutions include:
  1. TCM replacement.
  2. Replacing faulty wiring.
  3. Valve body replacement.
  4. Shift solenoid repair or replacement.
  5. Replace transmission fluid.

What does reverse incorrect ratio mean?

OBD code P0736 is defined as “Reverse -incorrect ratio”, and is set when the PCM/TCM (Powertrain Control Module/Transmission Control Module) detects a problem while shifting into reverse gear, or while the vehicle is in motion with reverse gear selected.

How do you know if your transmission solenoid is bad?

3 Signs of Transmission Solenoid Problems
  1. Unpredictable Gear Shifts. One of the most common sign that one or more of your transmission solenoids are going bad is unpredictable gear shifts. …
  2. Inability to Downshift. …
  3. Delays In Shifting.

Can you check transmission fluid?

Check the Level

With the engine warmed up, leave the car idling in park on a level surface. Pull out the dipstick, wipe it clean, replace it slowly, and then pull it back out. Check the fluid level—how high the fluid comes up on the dipstick—against the “full” and “low” or “fill” marks on the dipstick.

Will a bad shift solenoid throw a code?

Will a Bad Shift Solenoid Throw a Code? … Ignoring a warning light or code being thrown by a faulty transmission shift solenoid can lead to serious problems, such as running your vehicle in the wrong gear for your speed and conditions. This can then lead to your transmission overheating and breaking down.

How much does it cost to fix transmission solenoid?

Depending on the make and model of your vehicle, expect to pay between $15 – $100 for a single transmission shift solenoid. A pack can cost $50 to $300.

Transmission Solenoid Replacement Cost – Parts & Labor.
Type Cost Range
Single $15 to $100
Pack $50 to $300
Labor $120 to $400
Total (Pack) $250 to $600

Can you drive with a bad shift solenoid?

The short answer is that, yes, you can usually drive a car with a bad shift solenoid. … Fluid pressure control should continue to function in the gear with the working solenoid, but you should avoid putting any serious stress on the transmission — towing or drag racing — just in case.

Is there a fuse for shift solenoid?

Most modern vehicles have some sort of transmission control module that monitors the transmission through various sensors, such as the shift-position sensor and the transmission speed sensor. Additionally, the TCM and solenoid wiring are protected by fuses.

Where is the transmission shift sensor located?

The Transmission shift solenoids are located inside the valve body of your automatic transmission. They are integrated into the valve body, and on some car models, you can see them without removing the valve body, while on others, you have to remove the valve body to reach them.

Will disconnecting battery reset transmission?

Will disconnecting the battery reset TCM? Simply disconnecting the battery would not return the TCM to its default settings, you would need to use a transmission scan method to do so. Disconnecting the battery terminals will not complete the phase or solve any gear shift issue.

Can a bad ECM cause transmission problems?

For example, poor performance or unexplained drops in fuel economy or efficiency are often related to onboard car computer problems, or faulty ECU issues. A damaged ECU can cause problems when shifting gears in an automatic transmission, or cause sudden jerking or stopping that’s similar to transmission problems.