Question about 2001 Buick LeSabre
Code 118 means the engine temp sensor is sending a signal out of range to the computer. The signal is higher than 250 degrees.
The sensor and wiring would need to be checked.
Posted on May 09, 2013
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Posted on Jan 02, 2017
this is an obd2 trouble code table, it can help you understand the meaning of code.
and for this code, you can try this:
First, if you have access to a scan tool, check the reading of the coolant sensor. Does it read a logical number? If so, the problem is likely intermittent. Perform a "wiggle" test by wiggling the connector and harness to the sensor while watching the reading on the scan tool. Watch for any drop-outs. Drop-outs would indicate a bad connection. If the scan tool reads an illogical temperature, check the resistance of the temperature sensor. If it is out of specs, replace it. If it is in specifications, unplug the sensor and, using a fused jumper wire, jumper the two terminals of the connector together. The temperature reading should now be maxed out to above 250 degrees F. If not, there is likely a problem with the ground circuit or voltage supply.
Check for 5 volts reference voltage at the connector. Also check for ground presence at the connector. If you do not have 5V ref. and/or ground continuity, check for these back at the PCM connector. If you have these at the PCM connector, then repair open or short between the PCM and the sensor. If you do not, remove the offending wire from the PCM and then check for proper voltage at the PCM pin. If it's present now, repair short on the circuit. If it isn't present after removing the wire and checking the pin, replace PCM
NOTE: Usually, P0118 is indicative of a bad temperature sensor, but doesn't rule out these other possibilities. If you're unsure of how to diagnose a PCM, do not attempt.
Posted on Jul 28, 2011
SOURCE: 95 Buick Lesabre, stalling and
This sounds like you have a problem with the IAC (Idle Air Control Valve) or the wiring circuit which controls it. If you follow the below steps this will help you rectify what is actually causing your idle and stalling problem.
Procedure 1: 1. You will need a Tech 1 Diagnostic tool carry out these test. 2. Once you have this toll installed to the vehicle then run it through the RPM Control cycle test. 3. When doing this test the engine should change idle smoothly
Once you have done this let me know how you get on and I can give you further instructions if needed.
Posted on Feb 09, 2011
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Symptoms of a P0118 could include:
A code P0118 may mean that one or more of the following has happened:
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