EHC code 35 and 36

[nextelbuddy]

Hey guys hope I can get some help on this.

Air suspension error codes

EHC 34 Reservoir-pressure-sensor

EHC 35 Supply Reservoir-pressure-sensor




Reinstalled my complete air suspension system.

Pump, lines, accumulator


- 4 new arnott air bags
- 4 new level sensors
- Have tried 2 known good pumps
- brand new accumulator pressure sensor on the accumulator itself
- tried 2 different EHC2 modules
- voltage from all 4 sensor looks good



These 2 errors are instant, as soon as you clear then they come right back.

Air accumulator pressure always reads 9.7 bar and doesn't go up or down in INPA


I can manually raise the X5 with INPA and it holds pressure over night no problem.


Not sure what else I can replace besides the actual valve unit itself


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[nextelbuddy]

I found the problem guys

Since the error code was specifically saying reservoir pressure sensor supply pressure sensor and the fact that the error code always came back immediately after clearing led me to believe that there was a short in the wires. So I tested continuity between all three pins on the pressure sensor plug to the EHC2 module

I found it. Pin number 3 had no continuity so there's a broken wire

Made a temporary jumper wire between the EHC 2 and pin number 3 and no more error codes. Everything works like it's supposed to.

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[EODguy]

Good deal

Congrats on the reinstall.

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[c-bass]

Good to hear you got that sorted out and thanks for updating your post.