I have an $8D system on the test bench. When I run the system, I get an Error Code 33 Map Voltage High. I'm wondering if the ECM is smart enough to know when the RPM / KPA are out of range to trigger Error Code 33? I have a vacuum pump on the MAP sensor to vary the voltages seen by the ECM. I would think high RPM's at near 100 Kpa would be OK with the ECM. I would think low RPM's at 35 ~ 40 Kpa would be OK with the ECM.

Just wondering if anyone else who had an $8D system on a test bench had the same or similar Map Sensor related Error?

Thanks,
dave w