I have a Astra 1.7 diesel 2009, having problems with the car/ spanner light. Light comes on from cold and stays on until car is turned off and warm around 10mins, can turn off and restart immediately and light is out.
Have codes Ecn 068302 or P0683 believe these to be Glow plug open circuit.
Checked glow plugs all working.
Checked wiring to plug caps and 3 give a reading of 0.5 ohms the other 1 gives a zero reading.
Checked continuity on zero reading cap has far back down the loom has I can and all is fine .
Should all caps give a reading of 0.5 ohms.
Have change glow plug module with no change
Car has had 3 code readers read it and no faults found, got this code from pedal test, and after checking has above think this is related.
Any thought would be appreciated has this is driving me mad.