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Check engine light came back on with a code of 43 for a 2002 jeep liberty sport?
Wiki User
∙ 13y ago
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
The code 43 is an old two digit code that could mean numerous things. You need to have it checked with an obd scan tool to find out the four digit "p" code. example (p0301) is cylinder #1 misfire.
43 could be a misfire, a coil circuit problem, or a PCM power supply issue. That covers at least 7 "p" codes.
Wiki User
∙ 13y ago
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