Q: PO700 code is read on a code reader.

asked by on January 21, 2017

2005 Dodge Ram 1500 4.7 is stuck in limp in mode. I've replaced the solonoid pack, line pressure sensor, valve body, computer fluid and filters with ATF +4 as called for. I'm at a loss and tried to olhm out the points on the c4 connector at the computer but don't know what I'm looking for.

My car has 175000 miles.
My car has an automatic transmission.

Reduced Power light is on Inspection $79.99 - $89.99 Get a Quote

Hi there. The computer to the transmission (TCS) has failed and is not responding to any sensors and solenoids. When the TCS fails, it shuts off power to the transmission putting it into a limp mode as if the harness was removed. Before replacing the TCS, check the wiring harness inside the transmission for any breaks or frayed wires. If the harness looks good and has no issues with any resistance, then I recommend replacing the TCS. If you need further assistance with your transmission in limp mode, then seek out a professional, such as one from Your Mechanic, to help you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Transmission pops into neutral

Hey there. You may have a bad shifter cable end at the transmission control lever. Look at the shift linkage arm and inspect the shift cable end to see if bushing is worn out. Also check the other end of...

Car not getting enough fuel

P0300 is an engine code for multiple misfires. These are possible causes, vacuum leaks, damaged hoses or improper routing, fuel contamination, ignition system (ignition module, coil, spark plugs and wires,) or a fuel system issue. If there are specific codes...

Power steering fluid shoots out of cap when turned off and wheel is not turned?

You may have an air leak at the pump and thus air is being continually drawn in, and building enough residual pressure that must be relieved once you shut the p/s off. The pressure is too much to bleed of...

Bad odor in my car that is making me ill.

Hi, thanks for writing in. The first thing I would recommend doing is taking your vehicle to a local exhaust shop to determine if you have any exhaust leaks. If you have any exhaust leaks that would be my first...

What is a throttle body filter

I'm not sure why you are getting the definition of "throttle body filter" for the code P0068. The definition I come up with is throttle body air flow performance. In fact, all of your codes are having to do with...

New car battery, but there is no power to the car

Hello and thank you for contacting YourMechanic. Check the fuse box for any blown fuses that could have popped while the vehicle was at rest. If all of the fuses are okay, then check the condition of the battery cables...

Front brakes locked up. Replaced all but ABS pump/module.

If the front brakes are locking up you need to open the bleeder on a caliper to see if the wheel can then be turned. If you can now turn it then you may have bad front brake lines that...

Truck is knocking why

This is commonly associated with a worn main bearing or rod bearing. These are bearings that support the movement of your truck's crankshaft and pistons and involves dropping down the oil pan and removing main caps and rod caps to...

How do I switch between the odometer and the trip odometer?

Your odometer tells you how many miles your car has driven. Your trip odometer tracks how many miles you’ve gone since last resetting the trip odometer. You can use the trip odometer to calculate how many miles you’re getting on...

Related articles

The Best Used Cars to Buy If You Live in a City
Living Living and driving in the city means you’re faced with parking constraints, narrow streets, and the constant stop and go of traffic. With all of that said when you’re ready to purchase a used vehicle these are all things...
A Buyer’s Guide to the 2012 Dodge Caliber
If If you’re looking for a compact car that offers a bit more space with acceptable fuel economy, the 2012 Dodge Caliber is a worthy target. The hatchback design is versatile, while the cooling storage compartment, removable flashlight (rechargeable) and...
The Best Used Cars to Buy If You're a General Contractor
If If you're a general contractor, you probably aren’t in the market for a used car. More likely, you’re looking for a pickup truck, because you need to haul equipment and supplies to various job sites. Most contractors will likely...