Good morning everyone.. can anyone help me here with those codes. I am so sorry to touch this car now. I don't know what is going on? And I went to Princeton Acura they are refused to accept my nsx because it was to low and can not get up the the left.anyone any suggestions and I really really appreciate! Hope every primers are safe and well!
CEL code p1201 p1399
- Thread starter nsx27
- Start date
Those are engine misfire codes. During severe misfire unburnt gasoline and O2 will end up in the catalytic converters and react on the catalyst surface causing a severe temperature rise. Temperatures can get high enough that they will destroy the internal structure of the catalytic converter and melt the undercoating off of anything in the area around the catalytic converter. The risk of damage to the actual engine is low unless your misfire is so severe that you are washing the cylinders with unburnt gasoline or suffering from really severe pre ignition that the ECU is interpreting as misfire. If you drove your car a lot while the MIL was flashing you may have already toasted your catalytic converters.
Whether it is safe to drive your car will depend on how far away the dealership is and whether you can drive the car without triggering a severe bought of misfire. Since the MIL on the OBDII ECUs seems to flash when misfire occurs, try to avoid operating the engine under the conditions that cause the MIL to flash, if that is even possible. Ultimately, you need to be the one who decides whether it is possible to drive the car without further damage to the catalytic converters.
Whether it is safe to drive your car will depend on how far away the dealership is and whether you can drive the car without triggering a severe bought of misfire. Since the MIL on the OBDII ECUs seems to flash when misfire occurs, try to avoid operating the engine under the conditions that cause the MIL to flash, if that is even possible. Ultimately, you need to be the one who decides whether it is possible to drive the car without further damage to the catalytic converters.
As a further thought, P1201 is the code for a #1 cylinder misfire. #1 is on the back side of the engine and the coils and plugs on the back side of the engine are the most prone to water ingress and corrosion and eventual carbon tracking which can lead to misfires. This can be a particular problem if you like to wash your engine a lot or the coil covers were removed for maintenance work and switched front to back (not uncommon) which results in drainage problems or the cover gaskets may have gone missing or been damaged during work which allows water in.
Remove the ignition coils and sparkplugs and examine them. Is there significant rusting on the coils where they mount on the head? Look at the long nose of the coil and the spark plug insulator. Is there any sign of carbon tracking on either? Carbon tracking pretty much requires replacement. You might find the source of the problem and save yourself s trip to the dealership.
Remove the ignition coils and sparkplugs and examine them. Is there significant rusting on the coils where they mount on the head? Look at the long nose of the coil and the spark plug insulator. Is there any sign of carbon tracking on either? Carbon tracking pretty much requires replacement. You might find the source of the problem and save yourself s trip to the dealership.
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