XJ XJ8 / XJR ( X308 ) 1997 - 2003

Engine failsafe mode but car working fine

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Old Nov 17, 2024 | 05:32 PM
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Default Engine failsafe mode but car working fine

Today I saw engine failsafe mode on the dash but the car working fine and no obd codes
I turned off the car and started again nothing wrong with it but still showing fail safe any idea?
 
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Old Nov 17, 2024 | 05:57 PM
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You will most likely have a DTC on one of the modules on the CAN bus but might be a U or C code?
 
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Old Nov 17, 2024 | 06:33 PM
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Originally Posted by motorcarman
You will most likely have a DTC on one of the modules on the CAN bus but might be a U or C code?
Disconnected the battery for while and reconnect again
I got ABS trac not available and failsafe
So I think it's related to C code but my obd can't read brake system problems I'm not sure if abs failure will throw failsafe mode , should I look further or just fix the abs ?
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Old Nov 18, 2024 | 06:27 AM
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From: smithfield ri usa
Default Brake pedal

Originally Posted by Silverjag0
Disconnected the battery for while and reconnect again
I got ABS trac not available and failsafe
So I think it's related to C code but my obd can't read brake system problems I'm not sure if abs failure will throw failsafe mode , should I look further or just fix the abs ?
​​​​​
check you brake pedal switch see if you have cruise control if not it most likely switch is bad
 
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Old Nov 18, 2024 | 07:05 AM
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Originally Posted by jrb53
check you brake pedal switch see if you have cruise control if not it most likely switch is bad
You're right no cruise control
And the rear right light is on by its own the brake switch is bad . Thanks
 
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Old Nov 18, 2024 | 12:07 PM
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I’ve seen bad SLCM’s keep a tail light on at all times before and more than once. I wouldn’t blindly throw parts at a car to fix it unless you already have another brake switch and/or SLCM in your parts stash.
 
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Old Nov 18, 2024 | 12:47 PM
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Originally Posted by Addicted2boost
I’ve seen bad SLCM’s keep a tail light on at all times before and more than once. I wouldn’t blindly throw parts at a car to fix it unless you already have another brake switch and/or SLCM in your parts stash.
I will use advanced autel obd reader to get access to security system and brake
 
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Old Nov 19, 2024 | 11:50 AM
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check your ABS module and throttle body
 
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