- P0670 – Glow plug control circuit fault. 670 code stored when glow plug controller detects loss of battery supply voltage to controller or loss of comms to all 8 glow plugs at once. Check voltage supply glow plug controller mounted on drivers side cylinder head, rear. If supply voltage OK, replace glow plug controller. Checked all power/ground circuits for glow plug control module, all checked OK. Replaced glow plug control module, cleared codes, cycled engine on multiple times with zero faults.
Jennifer B. gave our service a 5 star review on 8/30/2022