B173d Peugeot Link Here

The B173D code specifically points to an electrical open circuit or a resistance issue on the (the cylinder closest to the timing belt or flywheel, depending on engine orientation). "Open circuit" means the engine control unit (ECU) tried to send voltage to that glow plug, but the electrical loop was broken.

This article will leave no stone unturned. We will explain exactly what this code means, the specific symptoms you will feel (and not feel), the step-by-step diagnostic process, the most likely culprits, and how to fix it permanently. b173d peugeot

Due to the carbon buildup mentioned earlier, the tip of the glow plug fuses to the aluminum cylinder head. When you apply brute force with a wrench, the glow plug shears off, leaving the threaded body inside the head. Removing a snapped glow plug requires specialized tools (extractors) and sometimes removing the entire cylinder head, which costs $1,500+. The B173D code specifically points to an electrical