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trouble code 33

Yoda

Well-known member
Administrator
Joined
Oct 12, 2000
Messages
4,884
Location
Amarillo, TX
Corvette
1981 UL5
topless82vette,

I am looking at my '81 shop manual thinking they may be similar.. There is a 32 and a 34 code but no 33 code listed?

32 is Baro Sensor Circuit Low??
34 is Vacuum Sensor Circuit
 
S

SARGE81

Guest
Code 33

topless82vette,
I believe that code 33 is a (MAP) Manifold Absolute Pressure sensor problem. The voltage is either to low or to high. Regardless, the sensor is no good. This definition of code 33 came from a couple of OBD-I charts I have. Hope this helps
SARGE :cool
 

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