Replaces the failure-prone conductor plate in the 722.6 / W5A580 valve body, curing limp mode, dead speedo and speed sensor codes.
If your Dodge Charger, Challenger, Magnum or Durango, Chrysler 300, Jeep Grand Cherokee, Commander, Liberty or Wrangler, or a Sprinter van has started locking itself in second gear with P0715 or speed sensor codes, the five-speed behind the engine is almost certainly the W5A580, Chrysler's name for the Mercedes 722.6 it builds under license as the NAG1. This is the replacement conductor plate for that transmission, with both internal speed sensors and the speed sensor connector built in. It cross-references 1402701261, 52108308AC, 52108308AB, 68021352AA and 917-678.
In the W5A580 the two internal speed sensors, N2 for the input shaft and N3 for the intermediate shaft, are not separate bolt-in parts. They are mounted on the conductor plate, a printed circuit carrier clipped to the top of the valve body. The plate also routes power and ground from the case connector to the solenoids and carries the temperature sensor signal back to the controller. The number in the name has a meaning: Sonnax notes the last three digits of the W5A code give maximum input torque in Newton meters, so the W5A580 is the 580 Nm version used behind the bigger V6 and V8 engines. When heat cracks a trace or a sensor contact, the controller loses the ratio check it needs on every shift and defaults to a fixed gear.
Scan the transmission controller directly and note which sensor is reported; P0715 alone tells you the circuit, not whether N2 or N3 failed. Inspect the round connector on the side of the case for fluid. If the connector sleeve is leaking, fluid travels up the harness and causes speed sensor faults that look identical to a bad plate, so fix the seal and clean the harness before condemning the plate. Remember that a slipping clutch can also set ratio codes, so check fluid level and condition first. Our 722.6 speed sensor symptoms guide shows how the N2 and N3 signals should look, and the conductor plate failure guide covers the complete test sequence.
This plate is listed for 2005-2020 vehicles with the 722.6 / NAG1 / W5A580 / WA580 five-speed: Chrysler 300 and Crossfire; Dodge Challenger, Charger, Durango, Magnum, Nitro and Sprinter 2500/3500; Jeep Commander, Grand Cherokee, Liberty and Wrangler; Mercedes-Benz Sprinter 2500/3500; and Volkswagen Crafter. Not every model year on that list used the five-speed in every engine combination, and the 722.6 ran several plate revisions, so read the part number on your existing plate or send us your year and VIN before ordering. This is the plate only; if you also want the case connector adapter, filter and gasket, see the 722.6 conductor plate kit. More parts are in the 722 transmission collection.
Work from underneath with the transmission in the vehicle. Drain the fluid, remove the pan and filter, unplug the case connector, and lower the valve body evenly after loosening its bolts in a criss-cross pattern. On the bench, remove the solenoid retaining brackets, record where each solenoid sits, unclip the old plate and fit the new one. Reinstall the solenoids in their original positions and bolt the valve body back up evenly. Use a new filter and pan gasket; a 722.6 service kit with fluid covers this for Sprinter vans. Fluid depends on the badge: Transmission Digest notes that Sprinter, Crossfire and Mercedes units need MB-approved fluid because of calibration, while other Chrysler NAG1 applications were calibrated for ATF+4, so follow the specification in your owner's manual. Set the level hot at the specified temperature, clear codes, and run the controller's adaptation reset or quick learn so shift timing is relearned against the new sensors. If the valve body itself turns out to be worn, the NAG1 valve body is the next step.
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Yes. W5A580 and NAG1 are Chrysler's names for the 722.6 five-speed. The 580 refers to its maximum input torque rating in Newton meters.
Yes. The N2 and N3 speed sensors are built into the plate, and the speed sensor connector is included. The case connector adapter, filter and gasket are not.
Use the fluid specified in your owner's manual. Chrysler-calibrated NAG1 applications were set up for ATF+4, while Sprinter, Crossfire and Mercedes units call for an MB-approved ATF such as one meeting 236.14.
Yes. Fluid wicking through a worn connector sleeve can corrupt the speed sensor signals. Check the plug for fluid and repair the seal before replacing the plate.
Yes. Clear the codes and perform the adaptation reset or quick learn with a scan tool, then drive through all gears at operating temperature.
