This means Idle speed control motor (ISC) or valve
It is the code for the TPS Throttle position sensor
Fuel Fail 47 Idle speed contol valve - coil 2: Open or short circuit.
In 1990-1994 XJ6 the VCM Code 44 is the code for the O2 sensor, either rich or lean exhaust has been detected and is causing the code to trigger. It could indicate a bad O2 sensor.
Fuel Fail 37 is either a fault with the EGR Valve or its Solenoid
Evaporative canister purge control valve circuit fault
fuel 44 is heated oxygen sencer bank A other term lambda senser the jag has two.
low battery. had battery tested load type. faild replaced battery fix code 29 thank you
Ignition Amplifier Failure
I own a 91' XJ6 also and i believe when that code comes up it is as simple as your gas cap not being on all the way
o2 sensor fuel too rich
Fuel Fault code 89 translates to "Purge valve circuit. Looks at voltage across purge valve winding to detect open or short circuit."
Fuel fail 39. EGR circuit. Faulty system operation. Is on my 90 xj6 as well- going to take EGR valve off and clean it- see what happens.