
This could mean that your clock is on a reset mode, or your transmission may have issues. After restoring the power, the electronic control systems of the vehicle may need restarting. Resetting the OBD2 codes forces your car's ECU to drain. If you don't find anything strange, like a rattling noise or a peculiar smell inside your car, it is perfectly safe to drive your vehicle. If it does, though, stay calm and find the nearest safe place to park so you can check on your car. But if it is the first time to appear, it may be just a pending code and may not occur again. When the CEL or MIL lights up while you're driving, it may cause you to panic. When the check engine light comes on while driving.Whatever the reason, address the issue first, especially if the check engine lights up for the second time and your pending code becomes active. It may be minor such as loose caps, or major such as a defective catalytic converter. The Check Engine Light is there for a reason. Fix the problem first before clearing the codes.Some guides use the terms Malfunction Indicator Lamp (MIL) or simply warning light. Different things like a faulty gas cap, dirty sensors, or an intake manifold leak can trigger a Check Engine Light (CEL). The check engine light appears on your dashboard when your car's ECU detects a problem. However, if you haven't corrected the trouble code, it's clear that it needs immediate attention. If the warning light persists, have your car checked with a professional mechanic, primarily if you have already worked on the trouble code previously identified. If it is still on, repeat the process for a second time. Makes me want to disconnect the battery more often.Turn your ignition on to check the warning lights. The other advantage was my gas mileage went from about 20 mpg to 23 mpg (If you want details you can look at the thread I started on the subject). I restarted several times and it still showed an error but good voltage so I just took off a battery cable for a minute or two and everything worked ok. It wasn't an engine code (I don't think), but I was able to reset it by disconnecting. Or maybe it only took a a very short time for the code to clear.Īlso on my '09 SRX the battery went dead and when I jumped it I got a charging system error. I got a too lean code and reset it by disconnecting the battery. I put a cold air intake (waste of money) on my 04 N* and ended up with a small gap past the MAF. I'm surprised disconnecting the battery no long clears codes. If the problem is actually fixed, the code will clear itself after so many good readings (i know how many or even if it is a fixed number). I'm threadjacking the scanner discussion.
