my on board diagnostics tells me code p033 current any idea what this code could mean?
Dec 4, 2012 at 11:42 PM
1994 Cadillac Sls On Board Diagnostics Tells Code P033 Current Idea This Could
1994 CADILLAC SLS
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33 - map sensor signal out of range, high
Measure the three voltages on the map sensor. One must have 5.0 volts. The ground wire will have close to 0.2 volts. The third one relates to this code. It should have roughly between 0.5 and 4.5 volts depending on intake manifold vacuum. The only way for it to go to 5.0 volts and set this code is if the ground wire is open, (it will measure 5.0 volts), the sensor is defective, (the ground will have the proper 0.2 volts but the signal wire will have 5.0 volts), or the signal wire is open, (all three voltages will be correct at the sensor).
Measure the three voltages on the map sensor. One must have 5.0 volts. The ground wire will have close to 0.2 volts. The third one relates to this code. It should have roughly between 0.5 and 4.5 volts depending on intake manifold vacuum. The only way for it to go to 5.0 volts and set this code is if the ground wire is open, (it will measure 5.0 volts), the sensor is defective, (the ground will have the proper 0.2 volts but the signal wire will have 5.0 volts), or the signal wire is open, (all three voltages will be correct at the sensor).
Dec 5, 2012 at 12:43 AM
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