Disclaimer: This article is for informational purposes only. Always consult your vehicle's service manual and follow safety procedures. Torque specifications vary by engine code (DV6C, DV6D, DW10).
For many drivers, seeing a "B" code is frightening, as these are traditionally reserved for Body Control Module (BCM) issues rather than engine performance. However, in the context of Peugeot, Citroën, and DS Automobiles, the B173D code has a very specific and common meaning: .
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+.
Do not ignore it. A $40 glow plug and an hour of careful labor today will save you from a $2,000 cylinder head repair tomorrow. If you are uncomfortable removing glow plugs from a hot engine (given their tendency to snap), pay an independent diesel specialist who has experience with Peugeot BlueHDi engines.
A: On transverse-mounted Peugeot engines, cylinder 4 is at the flywheel end, which often runs slightly hotter than cylinder 1. It also receives the most vibration, which fatigues the internal heating element faster.
Disclaimer: This article is for informational purposes only. Always consult your vehicle's service manual and follow safety procedures. Torque specifications vary by engine code (DV6C, DV6D, DW10).
For many drivers, seeing a "B" code is frightening, as these are traditionally reserved for Body Control Module (BCM) issues rather than engine performance. However, in the context of Peugeot, Citroën, and DS Automobiles, the B173D code has a very specific and common meaning: .
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+.
Do not ignore it. A $40 glow plug and an hour of careful labor today will save you from a $2,000 cylinder head repair tomorrow. If you are uncomfortable removing glow plugs from a hot engine (given their tendency to snap), pay an independent diesel specialist who has experience with Peugeot BlueHDi engines.
A: On transverse-mounted Peugeot engines, cylinder 4 is at the flywheel end, which often runs slightly hotter than cylinder 1. It also receives the most vibration, which fatigues the internal heating element faster.
