Range Rover Transmission Fault - Solved Here!

Range Rover transmission fault error messages can occur due to many reasons. It can be very difficult to find the cause of this issue.

So, what is causing the Range Rover transmission fault message?

The Range Rover transmission fault error message can happen due to a blown fuse. It can also happen due to a depleted auxiliary or bad main 12 V battery. Replacing the blown fuse and the depleted batteries can fix the problem. Moreover, you can look into the OBD2 error codes to directly root out the cause of the problem. Avoid driving while the Range Rover transmission fault message is showing to prevent risking your life and further damage.

Are you still confused about how to solve Range Rover transmission fault error messages? Read this article to learn more.

How to Solve The Range Rover Transmission Fault Error?

The Range Rover transmission fault message can occur due to 3 reasons:

Reason 1: A Blown Fuse

A blown fuse can be the cause of the problem.

Diagnosis:

To check if a blown fuse is causing the issue, follow these steps:

Open the lower glove box compartment
Pinch the two sides of the glove box inward. This will release the glove box.
Remove the glove box from its compartment.
Locate the array of fuses situated at the back of the compartment.
Find the second fuse from the left in the sixth row of fuses. This fuse will be numbered 57. But the numbering may be difficult to see as it is molded. It will also be the second red fuse in the row.
Remove the fuse from the array.
Check if the fuse is blown. This is what a blown fuse looks like in comparison with a good fuse:

If the fuse is blown, then that is what is causing the transmission fault message in your Range Rover.

Solution: Replace The Blown Fuse with A 10 A Fuse

To replace, the blown fuse, follow these steps:

Get a new 10 A fuse.
Remove the blown fuse from the array.
Put the new fuse in place of the blown fuse.
Put it back in the lower glove box.
Power ON your car.

Your transmission problem should now be fixed.

Reason 2: The Auxiliary Battery is Dead

Having a bad auxiliary battery can cause issues with the transmission system.

Diagnosis:

To check if your auxiliary battery is dead, follow these steps:

Remove the plastic floor covering underneath the passenger seat.
Remove the plastic panel covering underneath the glove box. It has two lift tabs underneath. Use a plastic prybar to open the lift tabs.
Locate the battery on the right-hand side top corner. It is a 12 V 1.2 A hr battery with a plastic blue cover.
Insert a flathead screwdriver inside the slot of the battery and pull out the battery. The battery will hang with the terminal wires.
Using a utility knife, cut the heat shrink tubes covering the terminals of the battery.
Take a multimeter and measure the voltage differences between the two terminals of the battery.

If the battery voltage is 12 V or less, then the auxiliary battery is depleted. You need to replace your auxiliary battery to use your Range Rover.

Solution:

To replace the auxiliary battery, follow these simple steps:

Park your Range Rover. You may find the Range Rover lowers when parked but don’t worry about it.
Get a new 12 V 1.2 A hr battery.
Check the polarity of the terminals connected to the older battery.
Disconnect the terminals from the depleted auxiliary battery.
Connect the terminals to the new battery based on the polarity of the previous connection.
Wrap the terminal points with electrical tape to prevent shorts.
Put the battery back into the battery slot in the top upper right-hand corner.
Put the plastic panel back.
Start your Range Rover.

Hopefully, your Ranger Rover transmission fault has now disappeared.

Reason 3: A Bad 12 V Battery

A bad 12 V battery is another reason why you could be getting this error message.

Diagnostic:

To test if your 12 V car battery is depleted, follow the steps mentioned in this video:

If your 12 V battery is depleted, that could be causing issues with your Transmission system. If you get a Range Rover charging system fault error, that is another indication of a dead battery.

Solution: Replace The 12 V Battery

If your 12 V battery is dead, you need to replace the battery. A new battery for Range Rover can cost $75 to $200. To replace the 12 V battery, follow the process given in this video:

This should remove the transmission fault message you have been getting in your Range Rover. If your Range Rover USB was not working before, it should be working now.

How to Identify Range Rover Transmission Fault?

To identify a Range Rover transmission fault error you will need to use a diagnostic tool. If you need help connecting your Range Rover to a diagnostic tool, follow this detailed video:

Using the diagnostic tool you can get error codes related to the transmission fault error messages. These are the error codes you will get if your transmission system has developed a fault:

Error Codes	Meaning	Solution
P0730	Incorrect Gear Ratio	Inspect the electrical connections and wires that connect the sensors to the transmission control module (TCM). Check for any corrosion or damage to the wires. If any wires are corroded or damaged, repair or replace them.
P0731	Gear 1 Incorrect Ratio	Add more transmission fluid or change it. Replace any defective shift solenoid. Replace or reprogram the TCM. Replace the wiring or connectors of a damaged transmission control circuit.
P0732	Gear 2 Incorrect Ratio	Refill low transmission fluid level. Change the dirty transmission fluid. Replace faulty shift solenoids. Repair or replace open or shorted shift solenoids harness. Repair or replace faulty shift solenoids circuit electrical connection.
P0733	Gear 3 Incorrect Ratio	Replace a shift solenoid. Replace the powertrain control module (PCM). Replace the transmission module. Change the transmission fluid and filter. Overhaul the transmission. Install a new transmission.
P0734	Gear 4 Incorrect Ratio	Inspect the transmission control circuit for any damaged wires or connectors. If any wires or connectors are damaged, repair or replace them. Inspect the shift solenoids for any signs of damage or wear. If any shift solenoids are faulty, replace them.If the PCM is found to be faulty, replace it.
P0735	Gear 5 Incorrect Ratio	Inspect the transmission control module (TCM) and wiring for any signs of corrosion or damage and repair them. Replace the transmission fluid and filter if they are old or dirty. If the pump is faulty, repair or replace it. If the shift solenoids are faulty, repair or replace them. If the torque converter is faulty, repair or replace it.
P0736	Reverse Incorrect Ratio	Replace the transmission fluid. Replace the transmission range switch. Repair or replace the wiring harness if there is an open or short. Repair or replace the park/neutral position switch. Repair or replace any broken electrical connections.
P0741	Torque Converter Clutch Solenoid Circuit Performance/Stuck Off.	Replace the torque converter lockup solenoid. Replace the TCC solenoid. Repair the damaged wiring to the TCC solenoid. Replace the valve body. Replace the TCM. Repair the damaged wiring to the transmission wiring harness. Replace the ECT sensor.
P173E	Ignition key lock solenoid circuit low	Check the wiring in the driver’s footwell and fix them if needed. Check the wiring of the TCM as well. Replace any corroded wiring.

Hopefully, this will manage to solve your transmission fault error messages.

Should You Drive With A Range Rover Transmission Fault?

No, you should not drive with a Range Rover transmission fault. This is because the transmission can behave unpredictably. This can put your life at risk.

Moreover, a damaged transmission can suffer more serious damage over time. This will cost you more money to fix in the future. So, if you get a transmission fault error, stop and fix the issue first, or call a mechanic.

How to Reduce Range Rover Transmission Faults?

To reduce transmission faults in your Range Rover, follow these precautions:

Check the transmission fluid level regularly.
When off-roading or on a low traction surface, lock the center differential.
Do not switch to reverse gear without fully stopping first.

Frequently Asked Questions (FAQs):

What Happens When A Transmission Fails?

When a transmission fails, you will get a partial or total loss of failure. Your car will refuse to move or move very slowly. You will face difficulty in changing gears or the gears will not change at all.

Is Transmission Failure Expensive?

Yes, a transmission failure is expensive. The cost of fixing a transmission will be more than $300. But if you need to replace the transmission system altogether, then you will need to pay up to $3500.

Should I Repair My Transmission?

Yes, you should repair your transmission, but only if the cost is 40% to 60% of the car’s value. If the cost of repair is more than this, you should buy another car instead. Replacing the transmission of a car can be very expensive for most people.

Conclusion

So, now you know all there is to know about Range Rover transmission faults.

Range Rovers can give transmission fault error messages for a variety of reasons. Finding the cause of the issue and fixing it can be a headache for most people. I hope reading this article helped you find the cause of the problem.