Code 48 and 71
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Code 48 and 71
93’ LS400
Just got a new ECU for my ls400 and it ran perfect when I put it in. No CEL until I drove it about 30-40 miles and then it came on out of no where. Diagnostic gave me a code 48 and a code 71. Car runs great just need to clear the CEL to get it smogged. What should I do? And does anyone know if these codes are related in any way?
Just got a new ECU for my ls400 and it ran perfect when I put it in. No CEL until I drove it about 30-40 miles and then it came on out of no where. Diagnostic gave me a code 48 and a code 71. Car runs great just need to clear the CEL to get it smogged. What should I do? And does anyone know if these codes are related in any way?
http://www.lexls.com/tutorials/intro/codereading.html
48 - Sub-throttle position sensor signal is 4.3V or higher, or sub-throttle position sensor signal is 0.2V or lower when idle switch is OFF
71 - EGR system malfunction
before you continue, what's the condition of your battery? are the terminals tight?
48 - Sub-throttle position sensor signal is 4.3V or higher, or sub-throttle position sensor signal is 0.2V or lower when idle switch is OFF
71 - EGR system malfunction
before you continue, what's the condition of your battery? are the terminals tight?
Thread Starter
Driver School Candidate
Joined: Feb 2025
Posts: 15
Likes: 2
http://www.lexls.com/tutorials/intro/codereading.html
48 - Sub-throttle position sensor signal is 4.3V or higher, or sub-throttle position sensor signal is 0.2V or lower when idle switch is OFF
71 - EGR system malfunction
before you continue, what's the condition of your battery? are the terminals tight?
48 - Sub-throttle position sensor signal is 4.3V or higher, or sub-throttle position sensor signal is 0.2V or lower when idle switch is OFF
71 - EGR system malfunction
before you continue, what's the condition of your battery? are the terminals tight?
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91ls400own
LS - 1st and 2nd Gen (1990-2000)
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Apr 28, 2009 09:11 PM