Hello

Im having CEM-1C02 L-signal too low code on my v70 2.4T 2001. Already check all codes via VIDA-DICE, after make a complete review of codes (must of them generated by low cranking speed). car starts again without any issue.

on DIM have message : Power system service urgent, no red battery sign.

L signal voltage before start up is 0.2 volts , after start is 0.8 volts stable.. battery has less than one year old. alternator checked (new bearings and Bosch OEM regulator from FCP euro). Cable #A5 checked between CEM and alternator. OK.

After clearing CEM codes, car works great until next morning, with strong start any time of day... but next morning same message and cranking issues.

No water or corrosion on CEM. Already check and clean Ground points on engine bay.

Any idea??

Kind regards

Rc

Battery voltage before start 12.5 volts, after start up 14.20- 14.45 volts without demand, after turn on lights, radio, AC. 14.10- 14.29 volts.