87 GN Error codes 24 & 31

dlebel

New Member
Joined
Sep 11, 2019
Hello All, I just purchased a 1987 GN and I am getting the following error codes 24 & 31.

Is this anything that I should be concerned with?

Thank you in advance!
Dave
 
Depends upon the modifications, post up everything you know about the car.

Updated instrumentation? or wastegate control?
 
The 21 may be a misadjusted tps,. The 31 is likely an unplugged wastegate solenoid



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Malfunction Codes Code Number Description
12Normal, no crankshaft pulses when engine not running
13O2 sensor
14Coolant temp sensor high
15Coolant temp sensor low
21TPS sensor high
22TPS sensor low
23Air temp sensor low
24Vehicle speed sensor
25Air temp sensor high
31Wastegate solenoid
32EGR
33MAF sensor signal high
34MAF sensor signal low
41Cam sensor
42EST circuit failure (ignition module to ECM)
43ESC circuit failure (knock sensor module)
44Oxygen sensor lean
45Oxygen sensor rich
51Prom error (chip or socket)
52Cal-pak error (small chip by prom)
55ADU error (bad ECM)
 
Yeah, I looked at it cross-eyed.... Code 24 is vss. No big deal. Can happen from braketorquing or it could be a bad vss.


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