Kofi wrote:I have the same problem with my 2009 Path. 4WD, ABS, brake light, VDC OFF, and SLIP lights are all on. I have tested all ABS sensors with a multimeter and they seem to be working fine.
In addition to that, the speedometer and odometer have both stopped working. The only code I got from scanning was P1622.
These ABS wheel speed sensors work on a duty cycle and can't be tested with a multimeter like those on Nissans years ago. There is a special Kent-Moore tool that Nissan and Infiniti dealers (should) have to component test the wheel speed sensors to determine if they are good or not.
That said, you may not have an ABS system issue, at all. When the ECM detect an engine management issue, it will disable the traction control system, which will illuminate the ABS/SLIP/VDC/4x4 warning lights.
The P1622 has to do with the fuel injector coding from what I've been able to look up. We don't have the 2.5L diesel engine in the USA, so I don't have any experience on that particular engine. I've found a few threads on Navaras with that engine and the P1622 code and most of them talk about having the fuel injectors re-coded to the ECM using a Nissan CONSULT II scan tool with a couple of recommendations of cleaning the mass air flow sensor. The best advice I can give is to first check the brake fluid in the master cylinder and make sure it's not low. If that's okay, I would ignore those ABS and traction control system warning lights for now and concentrate on the P1622 issue. There's a chance that fixing that will cause the ECM to enable the traction control system to start working, causing those related warning lights to turn off.