Code 21 is coolant temperature high. A faulty thermostat stuck closed or a defective coolant temperature switch could be the cause. Code 43 is Electronic Spark Control. This can be due to timing being off. When setting the timing you need to disconnect the tan/black wire. If that doesn't fix it then the Engine Control Module or Prom could be At Fault.
Slave codes
If you have Bio-codes (you will find Bio-codes on the back of Bionicle sets), you can put these codes on the Bionicle website. If you have a few of these codes, you get your kanohi mask badge.
According to Beckett price guide March 2007 their were 6,000 of the 89 sets produced. Not sure about the 90 sets...
Programs
Here are three(3) bonus codes for Spirit Fever:WelcomeALLSTARWORLDSYou get 21 different sets of cheerleading uniforms for each bonus code:)
No silver Proof sets were issued in the years given in this question. Proof Prestige sets were issued in 1986-1990 that have current retail values of $36.00. The standard proof sets are $6.00 each.
NEC Book each state uses different year codes
Here you are: www.neoseeker.com/Games/Products/DS/ryuusei_ no_rockman_2_berserk_x_dinosaur/action_replay.html If I recall, there are only 3 sets of codes though.
Slave Codes were sets of laws during the colonial period and/or in individual states after the American Revolution, which defined the status of slaves and the rights and responsibilities of slave owners.
You can buy one or similar team sets from that year for 1$.
It is hard to get you all the bio codes. Just a clarification, you can use the bio codes found on the bionicle sets to claim a prize. Usually posters. If you use mln, you get a kanoka club badge. A sample code is: xho369 This code is from the set: Chirox.
It sets up the code manager on the PC, for copying codes across to the AR from online sources.