DTC P2170-4B: Exhaust Pressure Regulator Vent Solenoid Control Circuit Low - Over temperature: Action

WARNING: This page is about a different car, the 2018 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

Vehicle Conditions to enable DTC Logging Strategy
- Start engine then press loud button and look for the Button LED flashing
Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
Refer to the electrical circuit diagrams and check the active exhaust solenoid circuit for
- Check resistance of solenoid approximately 40 Ohms
- Fuse failure
- Check that the valve connector is powered when the PCM is powered (ignition ON)
- Short circuit to ground
- Short circuit to power
- Open circuit
- High resistance
Start the engine and accelerate it through the rev range 800RPM to 4000RPM. The valve should be observed as switching open/closed if it is working correctly (observable from the tailpipe).
Remove active exhaust solenoid valve and check that the valve is free to move by hand
Check and install a new active exhaust solenoid, only when diagnosed as failed
Using the Jaguar Land Rover approved diagnostic equipment, clear all stored DTCs and retest