The very first post in this thread has information on what types of codes will be displayed and what flashing might mean.
In the 2005 FSM, (and probably the rest of the 3rd gen.) see the Body Section, under Instrumentation/Driver Info, then Combination Meter System. There's a page that explains the "Er . ." indications.
Also in the Body Section, look under LAN System (Diagnostics), List of Diagnostic Trouble Code (DTC). There's a list of LAN-related codes. These are "B####" codes that are not displayed by the odometer code display system.
In the FSM, right after the section List of Diagnostic Trouble Code (DTC), there's another section entitled Diagnostic Procedure with Diagnostic Trouble Code (DTC). In this section, in several of the pages for the "B" type codes, Er HC is indicated as a Trouble Symptom. These sections have troubleshooting trees that could be used.
DTC C0029 ANY OF WHEEL SENSORS SIGNAL
DTC DETECTING CONDITION:
• Defective ABS wheel speed sensor signal (noise, irregular signal, etc.)
• Defective magnetic encoder
• When a wheel is turned freely for a long time
• ABS does not operate.
• VDC does not operate.
• EBD may not operate.
Are there any warning lights on? If not, then this could be an old code that is still stored in memory.
Thanks, very cool and helpful I'm hoping! Anxious to try this out on a new 2007 Outback 2.5i with the automatic/manual transmission just bought for daughter. Nerve wracking not knowing anything about the vehicle except she loves her 98 Imprezza with 245k mi on it!
I sent you, Ron917 a personal note about tires and AWD on this vehicle. Will check forums as I am new here today. Anyone with what to do about the different tires that were on the Outback when I bought it could personal message me if they think they can help. Thank you!
I followed Ron917s how-to on OBD codes. Here's what I found:
P0457 turns out this was a loose fuel cap; no idea why or how it occurred, unless I forgot to tighten it. Fixed that.
C0054 this may have something to do with ABS sensors; did not find it specifically listed in generic codes;
C0071 as with above C code, may be something to do with ABS or VDC; but not listed by exact code number in generic codes.
So, can anyone help me with the 2 C codes? My manual says the VDC icon warning may come on with the CEL. I am hoping the fix of the loose fuel cap (it was off the filler completely, hanging) will enable the codes to be reset and not an indication of other problems.
Please also help with how-to reset the codes.
Thanks and happy holidays to all. I like the fact that Christmas Eve is also the first night of Hanukkah, so most of us celebrate our holidays together this year.
I found the C0054 code in an ABS link to NASOIC (sic) forum. It seems to correctly relate to my 2009 Outback tail/stop light bulb that was burned out. It has been replaced. Now to try to find C0071. Thanks to this and other Subaru forums.
My Thanks in this Holiday Season to Ron917 for a clear procedure to check codes for my 2009 Outback 2.5L. I look forward to learning more how-to for this car to keep it up in good condition. Thanks to all.