I bought my accident damaged XK8 a month or so ago and have begun the repairs... Parts are on their way from the USA. My parts car here in Mex turned out to be a non event.

So last night I charged the battery. This morning I sit in the car turn the key and hey presto I begin smiling at all the lights and switches, lowering and raising the convertible top, adjusting the seat watching the steering wheel move into its driving position. WOW! I am going to love this car. Yeah I'm a big kid and easily impressed!

So the moment of truth, does it run?. The car has not been started for over six months.I turned the key and it fired up immediately. Sounded great. Then I read "restricted performance"

I have searched this here on the forum and found the information that there is a reset button on the fuel supply located behind the hood latch in the drivers footwell. Is this correct for a 2001 XK8? Is there anything else I need to reset?

Now some of you are probably wondering why I havent simply wandered out into the yard, pushed the reset and discovered it solves the problem -fingers crossed- or not. It's because the internet connection is not available at my home.

Any additional information greatly appreciated.

 

Get yourself a code reader, once you know the codes it will be easier to track the problem, can be a number of things particularly for an accident damaged car..

If it was the inertia switch which often goes after an accident you would not of even managed to of got the thing started....

 

Bienvenido al foro ... rendimiento restringida podría significar muchas cosas ... Necesita los códigos obii para determinar la causa exacta del problema. Buscar en el siguiente enlace es el rendimiento sobre la restringida

Welcome to the forum... restricted performance could mean many things... you need the obii codes to determine the exact cause of the problem...Look at the link below it is about restricted performance.

https://www.jaguarforums.com/forum/xj-x308-xj8-xjr-27/restricted-performance-failsafe-problem-now-obd-ii-codes-5985/

Hope this helps,,, Let us know how it goes....

 

I finally have the codes and I hope someone here will be able to decipher them and tell me how to proceed.

0128
0327
1000

I have other parts being shipped here to Mexico in the next weeks, so if there are some parts needed I should be able to source them and have them shipped at the same time.

Thanks everyone in advance for your help and assistance.

PS. I got the codes from the local auto zone scanner. Here the shop manager has to accompany you to the vehicle and read the codes himself. Then you pay a fee for the usage after returning him to the store. Andres said to me that the Jaguar was the most beautiful car he had ever seen, he had never seen one before and waived the fee. What a nice guy. Now I am just hoping that the codes are no the beginning of a nightmare...

 

Manufacturer Specific Codes

P1000 OBD Systems Readiness Test Not Complete
P1104 Mass Air Flow Sensor Circuit Ground -
P1111 System Pass
P1121 Pedal Position Sensor A Circuit Range/Performance
P1122 Pedal Position Sensor A Circuit Low Input
P1123 Pedal Position Sensor A Circuit High Input
P1136 Control Box Fan Circuit -
P1137 Lack Of HO2S12 Switches - Sensor Indicates Lean -
P1138 Lack Of HO2S12 Switches- Sensor Indicates Rich
P1143 Air Assisted Injector Control Valve Range/Performance
P1144 Air Assisted Injector Control Valve Circuit -
P1157 Lack Of HO2S22 Switches - Sensor Indicates Lean -
P1158 Lack Of HO2S22 Switches - Sensor Indicates Rich
P1171 System Too Lean- Banks 1 And 2 (Lean Fuel Fault)
P1172 System Too Rich - Banks 1 And 2 (Rich Fuel Fault)
P1174 System Too Lean - Banks 1 And 2 (Suspect HO2S)
P1175 System Too Rich - Banks 1 And 2 (Suspect HO2S)
P1176 Long Term Fuel Trim Too Lean - Banks 1 And 2 (FMFR) -
P1177 Long Term Fuel Trim Too Rich - Banks 1 And 2 (FMFR)
P1178 Long Term Fuel Trim Too Lean - Banks 1 And 2 (AMFR)
P1179 Long Term Fuel Trim Too Rich - Banks 1 And 2 (AMFR)
P1185 O2 Sensor Heater Circuit Open - Hardware Fault
P1186 O2 Sensor Heater Circuit Shorted- Hardware Fault
P1187 O2 Sensor Heater Circuit Open - Inferred Fault
P1188 O2 Sensor Heater Circuit Resistance
P1189 O2 Sensor Heater Circuit Low Resistance Fault 1
P1190 O2 Sensor Heater Circuit Low Resistance Fault 2
P1191 O2 Sensor Heater Circuit Open - HArdware Fault
P1192 O2 Sensor Heater Circuit Shorted
P1193 O2 Sensor Heater Circuit Open - Inferred Fault
P1194 O2 Sensor Heater Circuit Resistance Fault
P1195 O2 Sensor Heater Circuit Low Resistance Fault 1
P1196 O2 Sensor Heater Circuit Low Resistance Fault 2
P1198 Fuel Level Input Circuit High
P1199 Fuel Level Input Circuit Low
P1201 Cylinder # 1 Injector Circuit Open/Shorted -
P1202 Cylinder # 2 Injector Circuit Open/Shorted
P1203 Cylinder # 3 Injector Circuit Open/Shorted
P1204 Cylinder # 4 Injector Circuit Open/Shorted
P1205 Cylinder # 5 Injector Circuit Open/Shorted
P1206 Cylinder # 6 Injector Circuit Open/Shorted
P1207 Cylinder # 7 Injector Circuit Open/Shorted
P1208 Cylinder # 8 Injector Circuit Open/Shorted
P1221 Pedal Demand Sensor B Circuit Range/Performance
P1224 Electronic Throttle Control Position Error
P1226 Mechanical Guard Circuit Range/Performance
P1227 Mechanical Guard Circuit Low Input
P1228 Mechanical Guard Circuit High Input
P1229 Electronic Throttle Control Circuit
P1230 Fuel Pump Relay
P1235 VSV 1/2/3 Circuit Range/Performance -
P1236 VSV 1 Circuit
P1237 VSV 2 Circuit
P1238 VSV 3 Circuit
P1240 Sensor Power Supply
P1241 Sensor Power Supply Low Input
P1242 Sensor Power Supply High Input
P1243 Analog Ground
P1245 Crank Signal Low Input
P1246 Crank Signal High Input
P1250 Throttle Valve Spring
P1251 Throttle Position
P1252 VSV Stuck On VA/VV
P1253 VSV Stuck On VR
P1260 Theft Detected, Vehicle Immobilized
P1313 Misfire Rate Catalyst Damage Fault - Bank 1
P1314 Misfire Rate Catalyst Damage Fault - Bank 2
P1315 Persistent Misfire
P1316 Misfire Rate Exceeds Emissions
P1336 Crankshaft/Camshaft Sensor Range/Performance
P1340 Camshaft Position Sensor B Circuit -
P1341 Camshaft Position Sensor B Circuit Range/Performance
P1361 Ignition Coil, Cylinder # 1, No Activation
P1362 Ignition Coil, Cylinder # 2, No Activation
P1363 Ignition Coil, Cylinder # 3, No Activation
P1364 Ignition Coil, Cylinder # 4, No Activation
P1365 Ignition Coil, Cylinder # 5, No Activation
P1366 Ignition Coil, Cylinder # 6, No Activation
P1367 Ignition System Failure Group 1
P1368 Ignition System Failure Group 2
P1370 Insufficient RPM Increase During Spark Test
P1371 Ignition Coil - Cylinder 1 - Early Activation Fault
P1372 Ignition Coil - Cylinder 2 - Early Activation Fault
P1373 Ignition Coil - Cylinder 3 - Early Activation Fault
P1374 Ignition Coil - Cylinder 4 - Early Activation Fault
P1375 Ignition Coil - Cylinder 5 - Early Activation Fault
P1376 Ignition Coil - Cylinder 6 - Early Activation Fault
P1384 Variable Valve Timing Solenoid A Circuit -
P1392 Variable Valve Timing Solenoid A Circuit Low Input
P1393 Variable Valve Timing Solenoid A Circuit High Input
P1396 Variable Valve Timing Solenoid B Circuit
P1397 Variable Valve Timing Solenoid B Circuit Low Input
P1398 Variable Valve Timing Solenoid B Circuit High Input
P1400 Exhaust Gas Recirculation Valve Postion Control
P1401 Exhasut Gas Recirculation Valve Postion Circuit
P1408 Exhaust Gas Recirculation Thermister
P1409 Exhaust Gas Recirculation Valve Circuit -
P1440 Purge Valve Stuck Open
P1441 ELC System 1
P1447 ELC System Closure Valve Flow
P1448 ELC System 2
P1453 Fuel Tank Pressure Relief Valve Malfunction
P1454 Evaporative Emission Control System Vacuum Test
P1475 Fan Relay (Low) Circuit
P1476 Fan Relay (High) Circuit
P1508 Idle Air Control Circuit Open
P1509 Idle Air Control Circuit Shorted
P1514 High Load Neutral/Drive Fault
P1516 Gear Change Neutral/Drive Fault
P1517 Cranking Neutral/Drive Fault
P1534 Restraint Deployment Indicator Circuit
P1565 Speed Control Command Switch Out Of Range High
P1566 Speed Control Command Switch Out Range Low
P1567 Speed Control Output Circuit - P1568 Speed Control Unable To Hold Speed
P1571 Brake Switch
P1582 Electronic Throttle Monitor Data Available
P1600 Loss Of Kam Power, Circuit Open
P1603 EEPROM Malfunction
P1605 Keep Alive Memory Test Failure
P1606 ECM Control Relay Output Circuit
P1607 MIL Output Circuit
P1608 Watchdog Malfunction
P1609 Internal Control Module CPU To CPU Communication Failure
P1611 Throttle Target Malfunction 1
P1612 Throttle Offset Malfunction
P1637 CAN Link ECM/ABS Control Module Circuit/Network
P1638 CAN Link ECM/INSTM Circuit/Network
P1641 Fuel Pump Primary Circuit
P1642 CAN Link Circuit
P1643 CAN Link Engine Control Module/Transmission Control Module Circuit/Network
P1646 Linear O2 Sensor Control Chip (Bank 1)
P1647 Linear O2 Sensor Control Chip (Bank 2)
P1648 Knock Sensor Input Chip
P1696 CAN Link Engine Control Module/Cruise Control Module Circuit/Network
P1697 Cruise Control Distance-Control Input Circuit
P1700 Transmission Indeterminate Failure (Failed To Neutral)
P1720 Vehicle Speed ( Meter) Circuit
P1722 Stall Speed
P1726 Engine Overspeed
P1730 Gear Control Malfunction 2,3,5
P1731 Inconsistent Gear Ratio
P1734 Gear Control Malfunction
P1745 Pressure Regulator 1
P1746 Pressure Regulator 2
P1747 Pressure Regulator 3
P1748 Pressure Regulator 5
P1758 Pressure Solenoid Control System Incorrect Current
P1775 Transmission System MIL Fault
P1776 Ignition Retard Request Duration
P1777 Ignition Retard Request Circuit -
P1778 Transmission Reverse I/P Circuit
P1779 Load Control
P1789 Ignition Supply Malfunction
P1790 Ignition Supply Malfunction
P1791 Ignition Supply Malfunction
P1792 Ignition Supply Malfunction
P1793 Ignition Supply Malfunction
P1794 Battery Voltage Circuit
P1795 Inconsistent CAN Level
P1796 CAN Controller Circuit (Bus Off)
P1797 CAN TCM/ECM Circuit Malfunction -
P1798 CAN TCM/INST Circuit Malfunction
P1799 CAN TCM/ABS Circuit Malfunction
P1882 Engine Coolant Level Switch Circuit Short To Ground

This should HELP ....I did not find the other 2 you had but someone will chime in....

 

Here it is code

P0128 coolant thermostat malfunction

P0325 Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
P0326 Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)
P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
P0329 Knock Sensor 1 Circuit Intermittent (Bank 1 or Single Sensor)

P0330 Knock Sensor 2 Circuit Malfunction (Bank 2)
P0331 Knock Sensor 2 Circuit Range/Performance (Bank 2)
P0332 Knock Sensor 2 Circuit Low Input (Bank 2)
P0333 Knock Sensor 2 Circuit High Input (Bank 2)
P0334 Knock Sensor 2 Circuit Intermittent (Bank 2)

 

OK so I am going to add coolant first. If this does not cure the problem, should I buy a new thermostat? Do you know if they are specialised or will a regular one be servicable?

 

Possible causes
- Insufficient warm up time
- Low engine coolant level
- Leaking or stuck open thermostat
- Engine coolant temperature sensor harness is open or shorted
- Engine coolant temperature sensor circuit poor electrical connection
- Faulty engine coolant temperature sensor

If cooling system is not leaking and the fluid level is OK, replacing the thermostat usually takes care of the problem.

P0128 JAGUAR Description
Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine.

 

Do I need a special coolant or is regular OK?

 

Check your Coolant Cap it should tell you,,, If not the coolant available now is supposedly interchangable ( I like keeping it the same)... Read the thread on Coolant... I put an in-depth reply on Coolants...

 

1000 So I can disregard the systems readiness fault 1000?

0327 I am checking into the Knock sensor fault and should find that the wiring is at fault or I need a sensor?

0128 Coolant draining as I speak and replacement coolant tonight.

If anyone has any thoughts they would like to add, please do...

 

Yes, you can disregard the P1000 until a couple days after you get all the other codes cleared. It will go away on its own without any other codes set and replace itself with P1111 meaning everything is OK.

Knock sensors fail about half the time because of being wet with coolant. It can be changed without removing the intake manifold. You will find a 'how to' thread with pictures with a simple search.

Did you replace the thermostat? For some reason the AJ series of engines tend to fail with the thermostat closed but your code may indicate it is stuck in the open position.

 

Thank you for the information re P1000.

I have just printed out the entire how to change a knock sensor and done the translation to Spanish. I plan to check the wiring to the connector which might be the fault. The pics will help me to show the info to my local mechanic who is a really great guy, but isn't too knowledgeable about Jaguars. I knew this would be the case when I bought it...

I have a slight leak on the thermostat housing, and Stymie is sending me a used replacement, together with a thermostat and gaskets.

I have used sites like this for my Miata MX5 and the guys there were really helpful, but hats off to everyone here, the support is FANTASTIC.