Evaporative canister purge control valve circuit fault
Fuel Fail 37 is either a fault with the EGR Valve or its Solenoid
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
low battery. had battery tested load type. faild replaced battery fix code 29 thank you
Fuel Fail 47 Idle speed contol valve - coil 2: Open or short circuit.
This means Idle speed control motor (ISC) or valve
1991 jaguar jx6 will not start
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.
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.
The "Fuel Fail 12" code on a 1993 Jaguar XJ6 indicates a fault in the fuel system, specifically related to the fuel pump or its circuit. This could be due to a failed fuel pump, a blown fuse, wiring issues, or a malfunctioning fuel relay. It's important to diagnose the exact cause to ensure proper fuel delivery and engine performance. Checking the fuel pump operation and related electrical components is a good starting point.
Usually about 19 MPG