Chrysler P121B: Active Exhaust Valve 2 Performance
Is your scanner showing Chrysler P121B?
No worries. We'll show you what it means and how to deal with it.
Chrysler P121B: Active Exhaust Valve 2 Performance
OVERVIEWWhat Does The Chrysler P121B Code Mean?
The purpose of the Active Exhaust Valves are to reduce exhaust noise in order to meet pass-by noise regulations. The Active Exhaust Valves consist of two parts. First is the mechanical butterfly valves that are welded into the exhaust pipe on each bank. Mounted to each of these is a smart actuator. They are connected to the mechanical valves through a transmission spring. This is to help reduce heat from transferring between the mechanical butterfly valves and the actuators.
What Are The Potential Causes Of The Chrysler P121B Code?
- Mechanical butterfly valve seized
- Transmission spring broken
- Active exhaust valve 2 actuator
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Throttle Body - Mopar (4591847AC)
>>> AUTOVIC A500 A518 A618 42RE 42RH 46RE 47RE 48RE Transmission 3-4 Accumulator Spring
>>> Exhaust Valve Actuator - Mopar (68322299AA)
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Chrysler P121B, DTCDECODE.
