Chrysler 300 (2005-2015) NAG1 Transmission Conductor Plate Explained
Having shifting problems or is your Chrysler 300 stuck in limp mode? Your conductor plate might be the culprit.
- This part is for the 5-speed NAG1 (W5A580) transmission, not the 8-speed.
- The most common symptom is the transmission going into 'limp mode' and getting stuck in 2nd gear.
- Always replace the fluid, filter, pan gasket, and electrical connector plug at the same time for a complete repair.
- Quality aftermarket brands like Dorman and Standard Ignition are reliable and cost-effective alternatives to OEM.
Is This Guide For My Chrysler 300?
This article applies to 2005-2015 Chrysler 300 models equipped with the 5-speed NAG1 automatic transmission. The first generation (2005-2010) widely used this transmission. In the second generation (2011-2015), V8 models continued to use the 5-speed NAG1 for several years, while many V6 models switched to an 8-speed transmission. This conductor plate is NOT for the 8-speed transmission. Always verify your vehicle's specific transmission before ordering parts.
Symptoms of a Failing Conductor Plate
A bad conductor plate can make your powerful sedan feel sluggish and unreliable. The most common cause of failure is the breakdown of the integrated plastic speed sensors due to heat and age. Here’s what to look for:
- Limp Mode: The most frequent symptom. The transmission gets stuck in second gear to protect itself. You can often reset it by turning the car off and on again, but the problem will return.
- Harsh or Failed Shifting: The car may jerk between gears or refuse to shift at all.
- Check Engine Light: A failing conductor plate will almost always trigger a check engine light and store diagnostic trouble codes.
- Spilled Drink Warning: A sudden jerk during a shift can feel like you've been rear-ended, often called the "spilled drink" effect by owners.
Known Issues and Recalls
While there are no widespread recalls specifically for the conductor plate on the Chrysler 300, the NAG1 transmission it is part of has a well-documented history of this issue. The failure of the input/output speed sensors is a very common problem. An unrelated 2005 recall (NHTSA ID: 05V-460) existed for a park pawl anchor shaft on some 42RLE transmissions, which is a different transmission not covered here. No relevant Technical Service Bulletins (TSBs) for the conductor plate were found in searches.
Choosing the Right Aftermarket Conductor Plate
When your conductor plate fails, you have a few options. The OEM part is available, but it's often expensive. Aftermarket manufacturers offer direct-fit replacements that provide excellent value and reliability.
OEM vs. Aftermarket
For the Chrysler 300's NAG1 transmission, a high-quality aftermarket conductor plate is a smart choice. The original design is known to fail, and reputable aftermarket brands often use robust materials to improve durability. Brands like Dorman and Standard Ignition are well-regarded in the industry and provide a reliable alternative to the pricier OEM unit. Budget-friendly brands also offer functional replacements that meet original specifications, making them a viable option for cost-conscious repairs.
Available Brand Tiers
- Premium Aftermarket (Dorman, Standard Ignition): These brands are known for quality and sometimes re-engineer parts to fix the original flaws. They are a trusted choice for a long-lasting repair and often come with a good warranty.
- Standard/Value Aftermarket (Replacement, Skyward): These brands provide a cost-effective solution. They are designed to meet OEM specifications and are a great option if you're on a tighter budget but still need to get your car back on the road reliably.
Pro Tip: Replace These Parts at the Same Time
Since replacing the conductor plate requires removing the transmission pan and valve body, it's the perfect time to perform a full transmission service. To prevent future leaks and ensure optimal performance, you should also replace:
- Transmission Filter
- Transmission Pan Gasket
- Transmission Fluid (use the correct type for the NAG1)
- Electrical Connector Plug (a very common leak point)
Cost of Replacing a Conductor Plate
The cost can vary based on whether you do it yourself or go to a shop. The part itself is affordable, but labor can add up.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Conductor Plate | $15.91 - $265.95 |
| Shop Labor | $250 - $500 |
| Transmission Service Kit (Fluid, Filter, Gasket, Connector) | $100 - $200 |
Frequently Asked Questions (FAQ)
What are the most common fault codes for a bad conductor plate?
The most common code is P2767 (Input/Turbine Speed Sensor 'B' Circuit No Signal). Other related codes include P0715 (Input/Turbine Speed Sensor 'A' Circuit) and codes related to gear monitoring or solenoid circuits.
Do I need to program the new conductor plate?
No, the conductor plate itself does not typically require programming for the NAG1 transmission. However, after the repair, it is essential to use a scanner to clear the fault codes from the Transmission Control Module (TCM) and allow the system to re-adapt.
Is this a DIY job?
For an experienced home mechanic, yes. The process involves draining the transmission fluid, dropping the pan, and carefully removing the valve body to access the plate. It can be messy and requires attention to detail, especially when reinstalling the valve body to ensure all linkages are correctly aligned. You will need a torque wrench, a T30 Torx socket, and a 7mm socket, among other basic tools.
Why is it important to replace the electrical connector plug?
The O-rings on the original 13-pin electrical connector plug are a notorious failure point, causing transmission fluid to leak. This leak can wick fluid up the wiring harness and damage the Transmission Control Module (TCM), leading to a much more expensive repair. Replacing this inexpensive part during the conductor plate service is cheap insurance.
Helpful Videos
Technical Specifications
OEM Part Numbers: 52108308AC 1402701261 1402700861 1402700761 1402700561
Fits NAG1 / W5A580 5-Speed Automatic Transmission. Includes integrated input and output speed sensors.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Chrysler 300: