DTC P0687-24: ECM/PCM Power Relay Control Circuit High - Signal stuck high: Action
WARNING: This page is about a different car, the 2015 Jaguar XF, 2014 Jaguar XF, and 2013 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
- Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the engine control module relay circuit battery junction box for short circuit to power
- Check and install a new engine control module relay as required