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1990 Cadillac DeVille 4.5L No Start, Multiple hard codes
Hi Group, This car came to me from another shop, they couldn't fix it either but gave up way before me. The car sets the above codes shortly after turning the key on. Not always all the codes, but at least two of them usually within seconds. Clearing the c...
FIX posted 5/7/1999
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| VIN | 1G6CD5339L |
| Engine | 4.5 L / 8 cyl |
| Emissions | OBD I |
| Symptoms | No Start, Multiple Hard Codes |
| Occurs | Always |
| Misc. | Fwd Deville 4 Door |
Trouble Codes
| 15 | Coolant sensor circuit open |
| 16 | charging voltage incorrect |
| 21 | throttle position sensor circuit shorted |
| 31 | map sensor circuit open/shorted |
| 38 | air charge sensor circuit open |
| 74 | air charge sensor circuit intermittently open |
Message Closed
Vehicle Data
1990 Cadillac DeVille
| VIN | 1G6CD5339L |
| Engine | 4.5 L / 8 cyl |
| Emissions | OBD I |
| Symptoms | No Start, Multiple Hard Codes |
| Occurs | Always |
| Misc. | Fwd Deville 4 Door |
Trouble Codes
| 15 | Coolant sensor circuit open |
| 16 | charging voltage incorrect |
| 21 | throttle position sensor circuit shorted |
| 31 | map sensor circuit open/shorted |
| 38 | air charge sensor circuit open |
| 74 | air charge sensor circuit intermittently open |
Video