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BoostisBliss

R32 GTR Ecu Code 21 and 34

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Hey guys my car died the other day on the highway just cruising at around 70mph. It lost engine power and and as soon as I pulled over I was unable to start the car again. The exhaust overheat light came on which I now know is the same as a check engine light. I towed it home and jumped the pins to reveal a code 21 ignition circuit. After replacing a blown electronic parts fuse I tried to start again with no luck. I jumped the pins again and now I'm getting fault code 34 engine knock sensor as well as code 21. I just ordered coil packs and figured that was the problem but just realized that 1 bad coil pack and the car would still start am I correct? Now I'm worried because of the knock sensor code. I couldn't find much info on the code 34. Does this mean the sensor is bad or detecting an actual engine knock? The car has new ignitor and new coil pack harness. I'm hoping new coil packs will remedy my problem but I'm now thinking it may be worse than that. I'm going to spin the CAS now to see if the injectors are clicking to make sure it's not the problem. Any advice would be really appreciated.

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Wouldn't think knock sensor would stop you starting. Maybe try to figure out what made your fuse blow (has it blown again?).

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Wouldn't think knock sensor would stop you starting. Maybe try to figure out what made your fuse blow (has it blown again?).
Since I tried to start it it has not blown but I think I hit a bump in the road and then it happened I dont think the fuse is even related honestly because I think it was the fuse for my dash clock because after I replaced the fuse it was working again. Do you know if the knock sensor is bad or if that means the ecu is detecting engine knock. I'm just trying to rule out engine failure at this point because I'm a worrier. After removing the coils I see 2 of the leads are very loose and wobbling around. I hope maybe it's just coil packs. They are the original ones so I knew they would cause problems eventually. Let me know if you know about the code 34 if that means actuall knock or just a bad sensor.

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You have a broken wire or a short of some sort. Break out the wiring diagram and chase the circuits that involve the ignition and the knock sensor and see where the power and earths and common points are. If you cannot manage that - take it to an auto eleccy now.

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