Ignition Amplifier Failure
code42
Fuel Fail 47 Idle speed contol valve - coil 2: Open or short circuit.
The fuel fail 89 VCM code on a 1990 Jaguar XJ6 indicates a problem with the vehicle's fuel management system, typically related to the Vehicle Control Module (VCM) detecting an issue with fuel delivery or engine performance. This could be due to several factors, including a faulty fuel pump, clogged fuel filter, or issues with the fuel injectors. It's essential to conduct a thorough diagnostic to identify and resolve the underlying issue to ensure optimal engine performance.
Fuel Fail 37 is either a fault with the EGR Valve or its Solenoid
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 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.
Code fuel 1 would indicate Oxygen sensor. A good information source is the Haynes Manual Jaguar XJ6 1988-94. Good luck.
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
Evaporative canister purge control valve circuit fault
fuel 44 is heated oxygen sencer bank A other term lambda senser the jag has two.
VCM code Fuel Fail 26 on a Jaguar XJ6 typically indicates a problem related to the fuel supply or fuel system. This may involve issues such as low fuel pressure, a malfunctioning fuel pump, or problems with the fuel injectors. It's essential to diagnose the specific cause to address the issue effectively, which could involve checking fuel lines, filters, and electrical connections. Consulting a professional mechanic or service manual is recommended for accurate troubleshooting.