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2006 Outback XT 2.5 turbo
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Discussion Starter #1 (Edited)
About half way through my 5 hour road trip today my dash board had a brief meltdown. After filling my washer fluid at a rest stop, I was accelerating to get back on the highway when my check engine light came on with an error code “ErHc 06” (06’ Outback XT). I was on the highway in the country and couldn’t immediately pull over. Before I got to the next exit I looked at the oil temp and it was maxed out. At that point I pulled over on the shoulder, stopped the car and opened the hood. Felt the engine and it didn’t seem any hotter than usual. Turned on the car again and the error code was gone but check engine and cruise were still on. I looked up old posts on the code and it seems as though this problem can be sometimes solved by turning the car off. I went through another 2 short driving cycles on the trip turning the car off and starting it each time. By the 3rd driving cycle all lights had gone away. I drove it another 2-3 hours after that no problem.

I suppose my question is do you guys have any reason to believe my vehicle is seriously damaged? I’ll still take it to a specialist this week, but is it safe to drive?

Thanks y’all
 

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2006 Outback Sedan LLBean
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So the code showed on the display area of your odometer? I've never seen anything but the functions there. I have a 2006 OB sedan LLBean h6

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2005 Outback VDC limited 3.0r
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Its a CAN network error, make sure all the grounds are clean and battery connections are clean/corrosion free. Also I don't believe the cars have a factory oil temp gauge, are you sure it wasn't the coolant temp gauge?
 

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2006 Outback Sedan LLBean
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This gen had can bus? I had a similar problem when I left my car parked windows closed in hot sun on a summer day. As soon as I drove a bit and had windows open it was gone. Actually I had no error code and no screen lite on my stereo. It was weird. But I bet you're fine now

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2006 Outback Sedan LLBean
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But clean grounds and battery for sure


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2006 Outback XT 2.5 turbo
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Discussion Starter #7
Its a CAN network error, make sure all the grounds are clean and battery connections are clean/corrosion free. Also I don't believe the cars have a factory oil temp gauge, are you sure it wasn't the coolant temp gauge?
Yes coolant temp, sorry for the mixup
 

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2006 Subaru Outback Wagon 2.5L XT Limited
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This gen had can bus? I had a similar problem when I left my car parked windows closed in hot sun on a summer day. As soon as I drove a bit and had windows open it was gone. Actually I had no error code and no screen lite on my stereo. It was weird. But I bet you're fine now

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Yes this gen has can-bus. It is both a blessing and a curse at the same time. Our cars have the immobilizer chip inside the key, which adding remote start to our cars is harder than a car without can-bus. Our cars came with the option of Remote start, however I am not paying 400usd for it and then labor of having subaru install it. Factory Remote start module for our cars might have to be programmed with subaru's fancy OBD2 read/writer. Since I had an aftermarket one already, I had to by two immobilizer bypass modules. One to start the car, and the other one to unlock the doors, truck, and etc. I have not had the time to install it yet. Been too busy, with work and fixing other issues with my subie.

One day I was driving and I randomly got a random error on the Trip odometer that says; Er LC, which states Low Speed CAn BUS data signal error. So far I have not recieved the error, since. I did pull the cluster out of the car and inspected the inside and re-installed it back into the car. Very strange.
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After filling my washer fluid at a rest stop, I was accelerating to get back on the highway when my check engine light came on with an error code “ErHc 06” (06’ Outback XT).
Although I haven't found explicit evidence of this, I've long believed that those LAN communication errors in the trip meter could sometimes be caused by one or more control modules not booting up properly. When the ignition key is turned to On (i.e., not all the way to Start), the various control modules start up and some run self-checks to ensure operation. This takes place at the same time the gauges will do a test sweep. If the key is left at On, some warning lights that had come on will go off, confirming that system is ready. In cases of Er HC errors, the indication is seen, as in the present case, either during the boot up period (if it was allowed) or shortly after starting out. In cases where I asked, the poster confirmed the habit of switching from Off/Lock directly to Start. Often, restarting the engine clears it.

The pegged engine coolant temperature gauge might have been as a result of the LAN communication problem, and not an actual overheating. But it might be worthwhile to investigate further. Even though the CEL has gone out, the codes related to it might be retained in memory. The 2006 has a built-in code reader (05, 06-09: How To Read Diagnostic Trouble Codes (DTCs)), or have the code(s) read at an auto parts store (many will do this for free). The code might provide more information about what happened.
 

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05 GT wagon, 09 Spec B, 18 3.6R Outback
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FWIW, the easy grounds to check are the two from the heads to the chassis under the engine. As well as the two off the back of the intake manifold by the brake booster.
Clean the surface of the two by the brake booster with a small wire brush.

I made new grounds for the two under the heads for both my cars.
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2005 OBXT Limited, VF37, STI intake, 5MT
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With intermittent issues like that, I usually start by checking the large, black connector on the RH side of the engine bay, near the turbo and strut tower. If the gray lever is not locked in, it can cause intermittent connection issues. The coolant temp going to max on the cluster is normal when this error occurs.

Since the ErHC is a "high speed CANBUS" error, it usually means a connection fault for some of the important systems like the ECU. Since the ECU is, essentially, grounded through the engine intake harness, that large connector (and the ground points) are critical.
 

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2006 Outback XT 2.5 turbo
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Discussion Starter #12
With intermittent issues like that, I usually start by checking the large, black connector on the RH side of the engine bay, near the turbo and strut tower. If the gray lever is not locked in, it can cause intermittent connection issues. The coolant temp going to max on the cluster is normal when this error occurs.

Since the ErHC is a "high speed CANBUS" error, it usually means a connection fault for some of the important systems like the ECU. Since the ECU is, essentially, grounded through the engine intake harness, that large connector (and the ground points) are critical.
493169

just to make sure, this is the connector yes?
 

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2006 Outback XT 2.5 turbo
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Discussion Starter #14
Yup, thats the creature. Even unplugging and reseating can potentially fix some issues.
Awesome, thanks I’ll try that. I’ve never really messed with these components before. Is it as simple as flipping that lever up or is there some sort of locking mechanism for this piece? Want to make sure I don’t break off any important but delicate plastic piece.
 

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05 GT wagon, 09 Spec B, 18 3.6R Outback
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You may want to disconnect the battery first...just to be safe.

Also, if the battery is disconnected for 15 min's, could be 10 minutes, the car will start hard because you have "reset the ECU". When your ready, turn the Key to On for 10 seconds, then start the engine.
 

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Discussion Starter #16
You may want to disconnect the battery first...just to be safe.

Also, if the battery is disconnected for 15 min's, could be 10 minutes, the car will start hard because you have "reset the ECU". When your ready, turn the Key to On for 10 seconds, then start the engine.
Thanks I did that. Been a few days and the car seems to be and it seems to be running fine again. Still planning on taking it to a tech but haven’t had the time yet.
 

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05 GT wagon, 09 Spec B, 18 3.6R Outback
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Generally speaking, you need to drive the car about 60 miles for the CEL to reappear if its going too.

With some CEL's, if you restart the car four times it will reset if the issues was a one time thing.

Example, I have floated my car onto the snow, all four wheels spun. the CEL came on. I realized what the issue was, when the car got back on the ground, I started it four times the light was gone.

Another, after driving 5 hours in a snow storm on the country roads across Maine, I noticed the light come one. I assumed crap had gotten into one of the ABS sensors, after four starts the light was gone.
 
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