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ODB codes for 93 9.3L (454) engine Jerry Jilek 4-14-05  
I can not locate the ODB codes for a 93 454CI (7.4L)engine Chevrolet.

Specifically code 32 but want to have all codes.

The VIN is 1GBJP37N5P132166

The vin breakdowns as:
1 US Built
G General Motors
B Chevrolet Incomplete
J GVR 10,001-14,000 Hyd Brakes
P Forward Control
3 1 Ton
7 Two door cab
N Producer-CPC, TYPE-7.4L V8 TBI, RPO-L19
5 Check Digit
P 1993
132166 sequential serial number

The N engine for 1993 cars is a 3.3L and does not have a 32 ODB code, probably because it is not a TBI engine, so I do not belive it is the correct table!
Re: ODB codes for 93 9.3L (454) engine Greg 4-21-05  
12 Computer Self Test Computer is working and able perform diagnostics
13 Oxygen Sensor Open circuit in signal wires
14 Coolant Sensor High temperature indicated, above 270 for 1 second
15 Coolant Sensor Low temperature indicated, below –27 F for 1 second
21 Throttle Position Signal voltage high, above 4.9 volts for more than 1 second
22 Throttle Position Signal voltage low, below.06 volts for more than 1 second
24 Output Speed Low Input shaft greater than 3000 rpm & output shaft less than 200 rpm
28 Pressure Switch Manifold PCM/TCM seeing one of two illegal combinations from pressure manifold
32 EGR System EGR system malfunction
33 MAP Sensor Signal voltage high – low vacuum
34 MAP Sensor Signal voltage low – high vacuum
39 TCC Stuck “Off” TCC slip is greater than 65 rpm for 2 seconds
42 Electronic Spark Timing Open or short to ground in the EST or bypass wires
43 Electronic Spark Control Knock sensor or ESC module malfunction
44 Oxygen Sensor Lean exhaust indicated
45 Oxygen Sensor Rich exhaust indicated
51 Faulty PROM Failed PROM or MEM-CAL chip
52 Faulty CAL-PAC Fuel CAL-PAK missing
53 System Voltage Voltage higher than 19.5 volts for 2 seconds
54 Fuel Pump Relay Circuit Voltage to fuel pump is less than 2 volts for 1.5 seconds
55 Faulty ECM / PCM Failed ECM or PCM
58 Transmission Temperature High Transmission temperature above 304 F for 1 second
59 Transmission Temperature Low Transmission temperature below –54 F for 1 second
68 Overdrive Ratio Error
73 Force Motor Current
75 System Voltage Voltage lower than 8.6 volts
81 Shift Solenoid “B” Circuit
82 Shift Solenoid “A” Circuit
83 TCC Solenoid Circuit
85 Undefined Ratio
86 Low Ratio
87 High Ratio
454 engine year? Mark 5-9-05  
I have a 454 engine. The best I can tell the number on the engine is C8B132219. Can anyone find out information on the engine on the year of it, what it came out of, and anything else on it? Thanks
Re: ODB codes for 93 9.3L (454) engine kyle 12-16-05  
Lol for one its not ODB its OBD for on board diagnostics. your 454 will have a number right at the back on that cast lip of the engine where the transmission bolts to the motor. its located kind of off center towards the left bank of the engine and itll be a 6 or more digit number, for example my big block says 361959 which means its a 1975 or later 454 that came out of a pickup, chevelle, etc. once you have that number you can actually buy books that have all the numbers in them or just phone engine rebuilder places and hopefully one of them can help you run a number.also on the passenger side cylinder head on the front there will be another number right above where the head meets the block there will be another number. good luck
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