DTC P203B-02: Reductant Level Sensor "A" Circuit Range/Performance - General signal failure: Action
WARNING: This page is about a different car, the 2018 Jaguar XF and 2017 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
- Vehicle Conditions to enable DTC Logging Strategy
- Engine running
- Tank unfrozen, drive for 10 Km
- Prioritised Checks to Perform
- Diagnosis of this DTC may require using the manufacturer approved diagnostic system check datalogger signals
- 0x043C Reductant Tank Temperature - Raw
- Check the DEF tank temperature is within -5 to + 70 °C
- 0x05C1 Reductant Tank Fluid Level
- Check, drain and correct diesel exhaust fluid level
- Refer to the appropriate system wiring diagrams and check the diesel exhaust fluid tank module circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Contact dealer technical support
- Using the Jaguar Land Rover Approved Diagnostic Equipment, clear the DTCs and retest