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You might want to try lubing the vnt linkage. Aerosol nickel antiseize. They start to make sense after a while.

Those codes are common. There are a number of reasons why P0088, high rail pressure, can set. It often sets in tandem with P0087, low rail pressure. P0045, VNT failure, unfortunately usually ends with turbo replacement. If there is power, a good ground, and CAN at the VNT controller...

I've tried to solve a similar problem in a 195, but the part to fix it wasn't available. It wasn't even in the parts system. That one got a new transmission under warranty. Maybe an Aisin specialist could help, but I don't know any.

P2436 is a problem with the atomizer. The solution is a new atomizer. P204F is a generic fault set in the ECU when the DCU requests the check engine light. There are more codes in the DCU. Depending on what diagnostic software you have available, these codes may not be accessible. Hino DXII is...

Are you working on a delete or something?

Is this the MBE 900 six cylinder? They run well and make decent power, but they have a couple of flaws. The EGR cooler is known to fail, sometimes spectacularly. It will dump coolant into the exhaust, and everyone behind you will get a spy hunter smoke screen. The EGR valves also fail regularly...

2009 trucks don't have a crankcase filter. You can add one if you want. It'll keep some schmoo from entering the turbo. Take the cap and plastic tube thing inside the housing and toss them. Install cap and filter from a 2011- later truck.

There's likely paper or trash or whatever stuck in the blower fan. Stick your head under the right center of dash. There's supposed to be a little screen there to catch debris. It's about six inches square. Is it missing? Is the screen clogged? Clean it out if it is. If it's missing, something...

Yes, it's the condenser fan. It runs when the ac compressor is on. Because they're in a vulnerable location, they sometimes lock up. See if you can turn it. If it turns, put 12 volts to it and see if it works. If it's fried it may have popped a fuse, too.

DEF doesn't affect regen, at least not in the circumstances you're describing. The burner is the worst part of this truck, hands down. It needs regular maintenance. It's weaknesses are compounded with the eventual degredation of the engine's fuel injectors. Is there heavy soot in the...

There is another burner fault. Ironically, it should get maintenance every 75k. It may just need a cleaning this time around. The first step is to hook it up to a diagnostic tool to see what it's doing.

There is a pickup tube. Might be worth a look though

The book says 50k. That being said, my shop basically never does a valve adjustment unless the overhead is noisy or if there's an aftertreatment complaint that can be traced back to engine performance.

Exhaust restriction? The catalyst mufflers sometimes plug up. Disconnect the exhaust before the muffler and test drive.

Warranty time is 1.1. I don't know about book time.

What's your email address?

Do you know if the injectors have been replaced? If it hasn't had any, it might be time. Injector problems will exacerbate burner problems.

You might have a burner problem. It should complete auto regens, manual regens shouldn't be happening all the time. What kind of conditions does this truck see? Does it have high idle time?

That sounds like an injector to me, too. Unless it's nailing all the time, I wouldn't worry too much about it.