Live Scan Code Communication lost with ABS system during road test.
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Vehicle starts and runs fine. However, the cruise control is disabled, and the transmission cannot shift into D3 or Lower. A code scan returned the following under the ABS system:
18-1 Left-Rear Wheel speed sensor malfunction
61-1 Battery voltage failure
83-1 ECM/PCM relation failure
112-1 Failure of internal power source
Both rear wheel sensors have continuity with a resistance of 1560 ohms at the left wheel. They also generate a voltage signal when the wheels are hand rotated.
The battery is in good condition.
A live scan shows all systems are fine except for the ABS. During a road test, the live scan reports all systems operating correctly till the vehicle reaches about 30 mph. At 30 mph the communication with the scanner is lost and reports either “Not Supported” or simply goes blank. Once the vehicle drops back below 30 mph, all the readings are restored as if nothing has gone wrong. There is no noticeable change in the handling of the vehicle while driving.
What makes this problem better or worse?
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How long has your 2008 Honda Pilot had this problem?
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Hello, what scanner is being used?
I would suggest a Honda HDS tester to really be valid for test results and readings. Additionally, "C" chassis codes would be present in OBD-II for anti-lock brake related concerns that would be helpful for troubleshooting.
My initial thought is you have low vehicle power - voltage - either due to a faulty engine battery or a charging system that is not keeping up with the electrical needs of the vehicle.
Since the left rear wheel sensor is coming off as having suspect readings, it's possible the sensor or related wiring and tone ring could have a concern.
The other codes sound like either in error or due to low battery power.
This is all a guess until hands on testing can occur with proper diagnostic equipment and workshop manuals for reference.
Seek guidance at a local shop near you, perhaps.
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The tester is an xTool bi-directional scanner updated with all the latest Honda software. I don’t know the exact model at this moment. It’s been especially good about reporting all the P, U, C and B standard and manufacture’s DTCs across several different car manufactures. The code numbers I listed are Honda specific and are listed in the literature. What has me puzzled is why the signal is good below 30 mph, and drops out above 30 mph. I know, under normal conditions, the cruise control can only be set at and above 30mph and disengages when the vehicle speed drops below that limit.
I’m going to pull the wheel to check the brakes. At the same time, I will inspect the tone ring, the sensors and their spacing, the bearings and the wiring. If I can’t find anything, I’ll probably need to get into a shop.
The tester is an xTool bi-directional scanner updated with all the latest Honda software. I don’t know the exact model at this moment. It’s been especially good about reporting all the P, U, C and B standard and manufacture’s DTCs across several different car manufactures. The code numbers I listed are Honda specific and are listed in the literature. What has me puzzled is why the signal is good below 30 mph, and drops out above 30 mph. I know, under normal conditions, the cruise control can only be set at and above 30mph and disengages when the vehicle speed drops below that limit. I’m going to pull the wheel to check the brakes. At the same time, I will inspect the tone ring, the sensors and their spacing, the bearings and the wiring. If I can’t find anything, I’ll probably need to get into a shop.