Tech Tip: Water Intrusion From A/C Drain May Cause DTCs On Ford SUVs

Tech Tip: Water Intrusion From A/C Drain May Cause DTCs On Ford SUVs

A DTC may appear on some 2006-'10 Ford Explorer, Mercury Mountaineer and 2007-'10 Explorer Sport Trac vehicles due to water traveling down from the A/C drain into the solenoid body connector on the left side of the transmission.

Some 2006-’10 Ford Explorer, Mercury Mountaineer and 2007-’10 ­Explorer Sport Trac vehicles built on or before August 12, 2009, and equipped with 5R55S transmission may exhibit a check engine light with DTC P0713 and/or various transmission solenoid body connector-related DTCs.

This may be due to water traveling down from the A/C drain into the solenoid body connector on the left side of the transmission.

Follow the Service Procedure steps to correct the condition.

Service Procedure
1. Verify any transmission-related symptoms or transmission-related DTCs that are present.

2. Check the transmission solenoid connector for signs of water intrusion or corrosion that may be coming from the A/C drain (see Figure 1).

3. If present, clean the connector thoroughly and apply Motorcraft Electrical Grease or equivalent as needed.

4. Cut and install the patch kit over the connector (Figure 1).

Courtesy of Mitchell 1.

You May Also Like

Advanced Wheel Bearing Diagnostics

Can a bump set a wheel speed sensor code?

A fellow employee contacted me with a diagnostic conundrum recently. When he was driving to work, the ABS and ESC light would come on just a quarter-mile from his house, and a message in the driver information center told him that these critical safety systems were not available. It did not matter the time of day or the weather. 

Simplifying AWD Systems

No matter the manufacturer, there is almost always an all-wheel drive (AWD) option for most platforms.

Driveshaft, Axle and Drivetrain Noise FAQs

These are some of the frequently asked questions about driveshaft, axle and drivetrain noise.

Drivetrain: Diagnostic Test Drive

Driveshaft problems can be spotted from the moment you put the vehicle in gear to pull it into a bay.

Constant-Velocity Axle Options

Whether new or remanufactured, complete CV axle assemblies can throw you a curveball from time to time.

Other Posts

Replacing Master Cylinders

The most common problems that occur in the master cylinder are wear in the piston bore and piston seal failure.

ADAS Suspension Alignments

Look at the “big picture” and really consider how the vehicle will operate if things aren’t done correctly.

Axle Torque Procedures

Guessing the correct torque setting is a bad idea.

Broken Springs

What is the cause for the failure? Why does it occur with specific vehicles? The answers might surprise you.