B173d Peugeot Site

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: .

A: No. AdBlue (SCR) is for NOx reduction. Glow plugs (B173D) are for combustion stability. However, a failed DPF caused by B173D can eventually clog the AdBlue injector. Conclusion The B173D Peugeot code is a classic, predictable failure on modern Peugeot, Citroen, and DS diesel engines. While the code sounds like a complex body control module error, it is almost always a simple electrical fault in the cylinder 4 glow plug circuit. b173d peugeot

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. For many drivers, seeing a "B" code is

A: Yes, in most regions with strict emissions testing (UK, EU, California). The illuminated engine light is an automatic failure. AdBlue (SCR) is for NOx reduction

Remember the golden rule of owning a modern diesel:

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. To understand this fault, you must first forget everything you know about old diesel engines.

If you own a modern Peugeot equipped with a BlueHDi diesel engine, you may have recently been startled by the sudden illumination of the dreaded engine management light (often called the "orange anti-pollution light"). When you plug in an OBD2 scanner, the code that appears is often cryptic: B173D Peugeot .