Renault Modus Diesel P0670 Fault Code: Diagnosis and Solutions

Model: Renault Modus Fault Code: P0670 Posted: 2016-03-08 08:56

My Renault Modus (1.5 dCi diesel) is displaying fault code P0670. I have no issues with engine starting, but after checking all four glow plugs and finding none open circuit, I replaced them. The P0670 code remained present. I then installed a glow plug relay module as a potential fix, but the fault code persists. I'm now seeking expert advice on possible root causes or troubleshooting steps for this specific issue in the Renault Modus diesel model.