One problem related to wiring has been reported for the 2004 Acura TL. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Acura TL based on all problems reported for the 2004 TL.
The knock sensor wire sends emission from the engine. If there is a problem with emission the sensor is suppose to adjust the fuel. However, the check engine light illuminates. Took vehicle to the dealer. However, the problem had not been resolved.