Hey guys I have a 2006 Honda Ridgeline RTS. The D light on my shift indicator started flashing earlier today. I'll post the pic. I read online that this could indicate a transition problem. I was wondering if any of y'all have had similar problems, if y'all know what transition problems this could be, and/or how to address the issue. Thank you! I really appreciate y'all's help!
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1st Gen Honda Ridgeline D (Drive) Light Flashing Problem
gl06ridgeline
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Hey guys I have a 2006 Honda Ridgeline RTS. The D light on my shift indicator started flashing earlier today. I'll post the pic. I read online that this could indicate a transition problem. I was wondering if any of y'all have had similar problems, if y'all know what transition problems this could be, and/or how to address the issue. Thank you! I really appreciate y'all's help!
![Image]()
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This is an age old Honda reported problem. I had it on our 2005? Pilot (around 2011?).
Some have reported simply topping off the tranny fluid, some have replaced all the tranny fluid, and some - like me needed to replace an external tranny pressure switch.
Online info gave me the necessary knowledge and I did the job myself, in the driveway; 30 min and $50 parts.
Some have reported simply topping off the tranny fluid, some have replaced all the tranny fluid, and some - like me needed to replace an external tranny pressure switch.
Online info gave me the necessary knowledge and I did the job myself, in the driveway; 30 min and $50 parts.
Start with the basics, is the transmission fluid full, what color is the transmission fluid and does the fluid smell burnt. Flashing D only means the transmission has an issue, you need to scan the transmission control module for the code. It could be as simple as a pressure switch or speed sensor, but the code will tell you what is happening.
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Great! Thanks guys! I’m scanning it rn. I’ll keep y'all posted on what we find!
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Great! Thanks guys! I’m scanning it rn. I’ll keep y'all posted on what we find!
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So I’m good on transmission fluid. The codes are telling me that I need to replace the 4th pressure switch, so I believe that that’s what’s causing my problem. Thanks for y’all’s help!
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It was P0873
Interesting Google Ai results for that code. "The P0873 code in Honda vehicles indicates a Transmission Fluid Pressure Sensor/Switch "C" Circuit High problem. This means the Transmission Control Module (TCM) is receiving a high voltage signal from the sensor that measures pressure in the transmission's 4th clutch circuit."
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Yeah, here is the pic.
The 4th gear clutch pressure switch is correct diagnosis.
There is an YT video of performing the service and I would imagine it is very similar to G1s. I have replaced my 3rd gear pressure switch with relative ease and the video makes changing the 4th easy as well.
There is an YT video of performing the service and I would imagine it is very similar to G1s. I have replaced my 3rd gear pressure switch with relative ease and the video makes changing the 4th easy as well.
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Sweet! Thanks, I’ll watch it!
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Just watched that video it was very helpful. I’m planning on doing the repair tomorrow!
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I appreciate it. Thanks
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I just finished the repair. That fixed the problem! Thanks for y’all’s help!
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