Fuel Fault code 89 translates to "Purge valve circuit. Looks at voltage across purge valve winding to detect open or short circuit."
Exhaust gas recirculation valve fault
Hi, This should be located on the engine plate which is normally on the engine block or on RH side of engine compartment. Kev
The Jaguar XJS from 1994 typically features a 4.0L inline-six or a 6.0L V12 engine, depending on the specific model variant. The "FF34" engine code generally refers to the 4.0L AJ16 engine, which is known for its smooth performance and reliability. This engine was part of Jaguar's efforts to modernize their lineup during the 1990s, offering improved fuel efficiency and emissions compared to earlier models. If you require more specific details about this engine, such as specifications or common issues, please provide additional context.
fault code 16 is: Air thermistor. Looks for signal less than 0.1 or more than 4.9 volts
low batrtery voltage poor connection to ecm power supplies poor ecm ground connections. bad ecm. key points : Do not replace ecu before testing Fuel Fail code 29 may be activated during engine start up when battery voltage is to low. this does not necessarily a faulty ecu. start the engine several times. if code 29 does not recur, no further action is necessary. HAVE BATTERY TESTED FIRST. (load test only) if necessary. recharge or replace the battery clear the code by removeing battery cable.; retest vcm .
Trouble code P1621 means: Engine control module engine immobilization input circuit malfunction
EGR Circuit (Faulty system operation)
The key code for a 1994 Jaguar XJS is typically found on a small metal plate or tag that is attached to the owner's manual or service book. It may also be written on the key itself, often on the head of the key. If you cannot locate it, contacting a Jaguar dealership with your vehicle identification number (VIN) may help you retrieve the key code.
The fault code FF77 typically indicates a fault with the ABS hydraulic unit or the ABS control module in a 1994 Jaguar XJS. It is recommended to have the ABS system diagnosed and repaired by a qualified technician to ensure the system is functioning properly.
I don't know about Jaguar specifically, but usually you bring the ownership to the dealer, and they will look it up on their computer for you.
Trouble code P1621 means: Engine control module engine immobilization input circuit malfunction
Could be almost anything to find out you need a code reader to plug into cars comp and retrieve the code.