Archived HELP 99 code p1688, p0237, p0236

[Floyd4runner]

The 236 coded a few months ago it cleared, never seen again. Today truck left me stranded it coded these three codes 236 crank sens perf, 237 map sens low voltage, 1688 internal fuel inj contoler failure. All cleared eccept for 237 or what ever the number is for map sens low voltage, it would not clear. I got the truck running once and acked like it only ran on 2 cylinders and would not pull itself in gear. 99 24 valve, adrenaline with airdog 100.

 

[Missouri Mule]

You can check to see if the map sensor is getting enough voltage and what type of voltage it is putting out but it probalby needs replacing. If 1688 comes back you mite be replacing the vp44.

 

[DieselLady]

With all those different codes coming up at the same time, I would be looking at Battery voltage, and/or ground connections to the computer possibly. Not too often that the crank sensor, map sensor and fuel injection pump go bad all at the same time. Make sure all grounds are good, possibly crack the connectors to the computer and redo and then try again. Just a thought!