Q: P0700 Transmission Control System MIL Request

asked by on August 04, 2016

The truck was starting to run a little shaky thought it may need an alignment. Set up that appt but in mean time detailed engine compartment. Started truck after detail everything seemed fine. Next morning jumped into go to work and it was very shaky and the engine light was flashing. I immediately turned off the truck. It needed some coolant and oil I added that seemed to run a bit better but I didn't drive it more than 5 feet. Engine light was off then came back on plugged in my scanner and got the P0700 code. Not sure how serious that is? And what steps I should be taking next to prevent from any further damage.

My car has 120000 miles.
My car has an automatic transmission.

Hi! A P0700 code stored in the powertrain control module (PCM) indicates that there is a code stored in the transmission control module (TCM) that can be accessed by looking into the TCM with an appropriate scan tool. Having the actual transmission code may provide more help for the diagnosis.

If "detailed the engine compartment", means washed under the hood with water spray, then you may have gotten water into some electrical connections. I suggest starting with an aerosol spray can of Electrical Terminal Contact Cleaner. Key off and out of ignition. Disconnect negative battery cable. Disconnect connectors to PCM, TCM, and any other control modules (like ignition) that may have gotten wet. Inspect terminals closely. Spray with contact cleaner. Allow to dry before reconnecting.

Some Dodges with a P0700 have needed a new TCM.

Flashing MIL light means engine is misfiring severely. You were correct to shut it off. Water in ignition coils, wires, spark plug boots could’ve caused it.

I’d suggest having your car looked at by a qualified technician, such as one from YourMechanic, to diagnose your trouble code firsthand and help you make the necessary repairs. Best of luck.

Was this answer helpful?
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

Get a quote

What others are asking

My Volvo will not go in reverse after driving it home

If the transmission all of a sudden will not go into reverse, then check the shifter cable to see if the transmission is in alignment. To do this in the car, simply set the parking brake and put the transmission...

On the thermostat housing on a 2013 Journey, which way does the gasket end seal to? Does it seal to the part connected to the hose?

Installing a thermostat upside down will cause the engine to overheat. Although not impossible, the thermostat will fit better one direction than the other. The coiled or spring loaded end needs to go into the engine block. The end with...

I have a 2002 Dodge Neon. The car vibrates and steering wheel shakes when car is in park and drive if sitting still

Has anyone suggested that the car could be misfiring? If it is the check engine light should be on. Try turning the key on without starting the engine and see if the Check engine light comes on. This is a...

Related articles

P0507 OBD-II Trouble Code: Idle Control System RPM Higher Than Expected
P0507 code definition P0507 is a generic OBD2 diagnostic trouble code (DTC) referencing a fault within the idle control system. This code...
P0199 OBD-II Trouble Code: Engine Oil Temperature Sensor Circuit Faulty
P0199 P0199 code definition P0199 is indicating a fault in the engine oil temperature sensor circuit. This code is similar to P0195, P0196, P0197, P0198. What the P0199 code means P0199 is found when the ECM has detected an...
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...