Conductor plate with the speed sensor connector for the 722.6/NAG1 W5A580 5-speed, the part that commonly cracks and causes limp mode or erratic shifts.
A Jeep Grand Cherokee or Commander that drops into second gear and stays there, or a Chrysler 300, Dodge Charger or Challenger that throws the check engine light and shifts like it has a mind of its own, very often has a cracked or corroded conductor plate inside the transmission pan. This is a replacement conductor plate for the NAG1, the Chrysler name for the Mercedes 722.6 five-speed (built as the W5A580 behind the gas V6 and V8 engines). It comes with the speed sensor connector already fitted and replaces OEM and superseded numbers 1402701261, 52108308AC, 52108308AB, 68021352AA and 917-678.
The NAG1 has no separate wiring harness inside the case. Instead, one molded plate clipped to the top of the valve body carries every electrical path the transmission control module needs: the two Hall-effect speed sensors (N2 and N3) that report input shaft speed, the contacts for the 1-2/4-5, 2-3 and 3-4 shift solenoids, the line pressure and shift pressure modulating solenoids, the converter lockup solenoid, the fluid temperature sensor and the park/neutral reed switch. The TCM reads clutch slip and gear ratio entirely from N2 and N3, so when a trace or contact inside the plate opens up, the module loses its reference and protects the clutches by locking the unit in limp-home gear.
Scan the TCM first. A speed sensor or solenoid circuit code that comes and goes is the classic plate failure. Check the 13-pin plug on the driver side of the case for ATF or green corrosion, because a wet connector produces the same codes. On a 2012 Grand Cherokee, Charger, 300, Challenger or Durango, also ask a dealer whether Chrysler bulletin 21-033-14 has been done: it reflashes the W5A580 TCM to stop an erroneous P0730 ratio code and fixes hot hang-in-gear complaints, and that is cheaper than any part. If the fluid smells burned or the pan is full of friction material, the plate will not fix slipping clutches. Our 722.6 valve body symptoms and testing guide separates hydraulic flares from electrical faults, and 722.6 common problems and fixes covers the connector leak in detail.
Listed for the Chrysler 300 (2005-2014), Dodge Charger (2006-2017), Dodge Challenger (2008-2014), Dodge Durango (2011-2013), Jeep Grand Cherokee (2005-2013) and Jeep Commander (2006-2010), plus Sprinter vans that use the same 722.6. Several of these model lines switched to an eight-speed partway through, depending on engine and drive layout, so confirm your vehicle has the five-speed. Compare the number on your old plate with the OEM numbers above, or send us your year and VIN and we will check it. Everything else for this transmission is on our 722.6 and 722.9 parts page.
| Transmission | 722.6 / NAG1, W5A580 / WA580 5-speed automatic |
| Includes | Conductor plate with speed sensor connector |
| Replaces part numbers | 1402701261, 52108308AC, 52108308AB, 68021352AA, 917-678 |
| Fits | Chrysler 300 (2005-2014), Dodge Charger (2006-2017), Dodge Challenger (2008-2014), Dodge Durango (2011-2013), Jeep Grand Cherokee (2005-2013), Jeep Commander (2006-2010) |
| Item weight | 1.68 lb |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
If limp mode comes from a speed sensor or solenoid circuit fault inside the old plate, yes. If the clutches are burned or the codes point at ratio errors with clean electrical readings, check the fluid and the valve body before buying.
Yes. NAG1 is the Chrysler name for the Mercedes 722.6 five-speed, built in versions such as the W5A580. This plate is for the five-speed only, not the later seven-speed or the eight-speed.
Not usually. The solenoids move over from the old plate. Measure each one before reinstalling and replace any that are out of range or corroded.
Chrysler, Dodge and Jeep NAG1 applications use ATF+4 per Transmission Digest; Crossfire and Sprinter units use Mercedes-specified fluid. Plan on a new filter and pan gasket as well.
Yes. Clear the stored codes and reset the transmission adaptations, then road test so the module relearns shift pressures with the new plate.
Match the number on your old plate to 1402701261, 52108308AC, 52108308AB, 68021352AA or 917-678, and confirm the vehicle has the five-speed. Or send us your year and VIN.
