Mechanics

HOW DO I TROUBLESHOOT DTC 41

1993 Lexus LS 400 • 320,000 miles

Tune up parts look like new. Fuel pump and filter are new. Both tps units are new. Car acts up after approx 1 hour, and only when its raining.I keep coming up with code 41.I did the lexus method of tps adjustment.
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Mikemechanicrr
February 28, 2012.



Sounds like you have to check the TPS wiring back to the computer for short and open circuit-if okay -have the computer further checked-

Rasmataz
Feb 28, 2012.