2001 Peugeot 806 2.0 HDi – Workshop Service & Repair Manual

2001 Peugeot 806 2.0 HDi Owners: Essential FAQs for Common Problems & Solutions

• Why is my 2001 Peugeot 806 2.0 HDi idling erratically?

  The 2001 Peugeot 806 2.0 HDi, being a diesel, can sometimes suffer from inconsistent idling. Often, this is down to either a faulty idle control valve or, perhaps, a defective throttle position sensor. To check, you might start by looking for any obvious loose connections around these components. Sometimes, just giving the throttle body a careful clean can make a surprising difference. If that doesn't quite do it, a diagnostic scan could help pinpoint the exact sensor causing the fuss.

• What causes the sliding doors on my 2001 Peugeot 806 2.0 HDi to stick or not open properly?

  Ah, the sliding doors on these 806s can be a bit temperamental, can't they? Usually, it's the runners or rollers that get a bit worn or just gummed up with dirt. A good first step is to clean out those tracks really well – grab some brake cleaner and a brush, then lubricate them with a silicone spray. Also, check the external handle mechanism; sometimes a pivot snaps or a linkage simply pops off. You might need to gently remove the interior door panel to get a proper look inside and adjust or reattach any loose rods.

• My 2001 Peugeot 806 2.0 HDi feels sluggish and has less power. What should I check?

  If your 806 2.0 HDi is feeling a bit underpowered, one common culprit can be the Mass Air Flow (MAF) sensor. This little sensor measures the air going into your engine, and if it's dirty, your car's computer might get confused. You could try cleaning it yourself with a special MAF sensor cleaner – remember, be super gentle and don't touch the wires. If cleaning doesn't work, a replacement MAF sensor is often the next step. Also, keep an eye out for black smoke or increased fuel usage, as these are tell-tale signs.

• Why are my electrical components, like the fuel gauge or fan, acting strangely in my 2001 Peugeot 806 2.0 HDi?

  Electrical quirks are, shall we say, a classic Peugeot feature of this era. If your fuel gauge is a bit of a fibber, or your cooling fan only decides to work at really high temperatures, it could be a few things. Sometimes it’s just a loose or corroded wire, perhaps even in the main wiring harness near the passenger footwell. Checking your fuses is always a good starting point. If things are really haywire, like the whole dashboard going a bit mad, a BSM (Built-in Systems Interface) module might be on the fritz, but that's a bigger job.

• My 2001 Peugeot 806 2.0 HDi struggles to start, especially when it's cold. What's causing this?

  Cold starting issues in a 2.0 HDi often point directly to the glow plug system. These little guys pre-heat the combustion chamber in diesel engines, and if they're not working right, starting can be a real chore. You could try checking the glow plug relay first; it's often tucked away behind the ABS pump. Also, inspecting the glow plugs themselves for signs of failure is smart. Sometimes, they just wear out over time. If they're not glowing properly, you'll definitely notice the difference on frosty mornings.