Troubleshooting the Peugeot B173D Fault Code: When Your Steering Lock Acts Up
If you’ve hooked up a diagnostic scanner to your Peugeot and seen B173D pop up, you aren't alone. This code specifically points toward an "Internal fault in the electric steering column lock." While modern electronics make our cars safer, they can certainly make a Monday morning frustrating when the car refuses to acknowledge your key or won't start. What is the B173D Code?
On Peugeot models—particularly newer ones like the 308, 3008, or 5008—the steering column lock is an electronic module. Code B173D typically triggers when the car's computer (the BSI or BCM) detects that the lock mechanism isn't reaching its intended position (locked or unlocked) or there is an internal electrical failure within the module itself. Common Symptoms "Steering Lock Fault" message on the dashboard. The car refuses to start or the ignition won't turn on.
A clicking sound from the steering column that doesn't result in a start.
Difficulty turning the steering wheel even when the key is detected. Potential Fixes and Steps to Take b173d peugeot work
The "Hard Reset":Sometimes the electronic modules just need a fresh start. Try disconnecting the battery for about 10–15 minutes. This can sometimes clear temporary "glitches" in the communication between the BSI and the steering lock.
Check Battery Health:Peugeots are notoriously sensitive to voltage drops. A worn-out battery can cause "ghost" codes across multiple systems. Ensure your battery is putting out at least 12.6V when the engine is off.
Inspect the Wiring:Before replacing expensive parts, check the wiring harness leading to the steering column. Look for loose connectors or signs of chafing. A simple loose pin can trigger a B173D code just as easily as a broken lock.
Module Replacement:If the code persists after a reset and the battery is healthy, the internal motor or the sensor inside the steering lock module may have failed. Because this is a security-linked part, replacements often require specialized coding to sync with your car's immobilizer system. Is it Safe to Drive? Troubleshooting the Peugeot B173D Fault Code: When Your
If your car is already running, the steering won't suddenly lock while driving. However, if you see this message, avoid driving long distances and get it to a workshop immediately. Once you turn the car off, the faulty lock might refuse to disengage again, leaving you stranded.
Are you currently dealing with a B173D error? Tell us your car model and what happened leading up to the fault in the comments below!
Engine fault - Have your vehicle repaired: Peugeot / Citroën - klavkarr
It seems you're asking for content related to Peugeot fault code B173D. This is a manufacturer-specific diagnostic trouble code (DTC) typically found in Peugeot (and Citroën/DS) vehicles, often concerning the airbag / supplemental restraint system (SRS). The Code: B173D typically relates to the Instrument
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If you are a mechanic or a DIY enthusiast using a diagnostic tool, "B173D" refers to a Body Code (B).
Sometimes, the B173D is a phantom code. The Battery Management System (integrated into the negative battery terminal sensor) loses synchronization with the relay’s actual state. This happens after a battery replacement without proper coding.