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What is diagnostic code 41 in a 92 jeep wrangler?

Diagnostic code 41 in a 1992 Jeep Wrangler indicates a problem with the Transmission Range Sensor (TRS), also sometimes called the Neutral Safety Switch. This sensor tells the computer what gear the transmission is in. A faulty sensor can prevent the engine from starting, cause erratic shifting, or lead to other drivability issues.