Question about 2002 Jaguar X-Type

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Engine management light on Fault code found p1646 what does it mean ?

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P1646 is a faulty heater circuit on bank 1 upstream o2 sensor. If you have the V6 2.5 petrol engine, then bank 1 is the exhaust manifold nearest the bulkhead ( firewall if you in the states). Replace the upstream o2 sensor. Cost around £70from dealer...not available elsewhere.

Posted on May 28, 2011

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SOURCE: management light on fault found is p1646 what

You can check out fault codes at http://www.bluejag.co.uk.
Looks like faulty Lamda Sensor.

Fault Code:- P1646 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 1 upstream (1/1)

Action of ECM:- ECM Default:- HO1S 1/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.


Possible Fault:- HO2 Sensor 1/1 heater failure HO2 Sensor 1/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

Posted on Jun 11, 2011

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How do I fix P0300,P0301,P0303, P0305,P1313,P1316& P1646?2 weeks ago,codes were minus P1313&P1316 with P0057 added in.replaced bank2 downstream sensor,P0057 gone but 2 new codes popped up????


the engine managment system on this car treats each bank as 2 seperate engines bank 1 and bank 2 the fault codes you have got are emission related. diagnosis is not easy because the ecu will use the other bank to compensate and alter its fueling etc to reduce emissions. the only way to sort it out is to put it on suitable diagnostic equipment and monitor live data ie. lambda sensors/ catalyst efficiency hope this helps

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Engine managements lights on faulty


The engine light is telling you that the has found a fault in one of the sensors that it moniters and you have to run the fault codes to repair/ replace the faulty sensor.

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Have ford s-max with dtc code F00616 what does if mean?


It is a common misconception that the instrument cluster self test gives DTC's for the engine management system, it provides cluster related DTC's on test 10 of the cluster self test, DTC should be displayed above the code, these will be displayed at 1 second intervals, once you press OK again the cluster will scroll to the next test, the format of the codes shown in the cluster is designed for Ford engineering and can only be translated into usable codes by Ford IDS.

The only way to find out why the engine management light is on is to have a scan of the engine management control module carried out using an appropriate code reader, this will give you the standard EOBD codes for example a catalyst efficiency code would show P0420. If you want to do this on a DIY basis then cheap code readers are available on the internet for around $75.00, these code readers also reset the light after the fault has been fixed. if this was helpful please leave me good feedback

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1 Answer

How to repair the p1646


Looks like Lambda sensor fault,

Fault Code:- P1646 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 1 upstream (1/1)

Action of ECM:- ECM Default:- HO1S 1/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.


Possible Fault:- HO2 Sensor 1/1 heater failure HO2 Sensor 1/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

See http://www.bluejag.co.uk for more info

Aug 30, 2011 | 2002 Jaguar X-Type

1 Answer

I have both a P1111 and P1646, what are these and how do you fix them


You can check out all fault codes at http://www.bluejag.co.uk

looks like faulty Lamda sensor.


Fault Code:- P1646 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 1 upstream (1/1)

Action of ECM:- ECM Default:- HO1S 1/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.


Possible Fault:- HO2 Sensor 1/1 heater failure HO2 Sensor 1/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

Jun 01, 2011 | 2003 Jaguar X-Type

1 Answer

Check engine fault code 1646


P1646 is a defective heater circuit on an o2 sensor. (bank 1 sensor1)I'm assuming you have the 2.5 V6 petrol engine? Replace the upstream sensor on bank1 to cure problem.

May 28, 2011 | 2003 Jaguar S-Type

1 Answer

Management light on fault found is p1646 what


You can check out fault codes at http://www.bluejag.co.uk.
Looks like faulty Lamda Sensor.

Fault Code:- P1646 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 1 upstream (1/1)

Action of ECM:- ECM Default:- HO1S 1/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.


Possible Fault:- HO2 Sensor 1/1 heater failure HO2 Sensor 1/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

May 28, 2011 | 2003 Jaguar X-Type

1 Answer

X type fault codes p1111 & p1646 can you shed any light on them for me please ?


P1111 - System Pass
This is flagged after DTCs have been cleared, all engine management OBD diagnostic monitor drive cycles HAVE BEEN COMPLETED.

P1646 - Linear O2 Sensor Control Chip (Bank 1)
Its listed as either a faulty heated HO2 sensor ie lambda sensor (upstream bank 1) or a short (presuming the ECM is OK as no other codes)
Did you replace the right one... bank 1 is at the back of the V6, bank 2 is at the front so its the back one.

Hope this helps (remember to rate tis answer).

Jan 20, 2011 | 2002 Jaguar X-Type

1 Answer

2003 jaguar s type what does p 1000 code mean


It shows that your fault management system has been recently reset. It will not bring on the engine management light. For more info on fault codes goto
http://www.bluejag.co.uk/

Mar 21, 2010 | 2004 Jaguar S Type

2 Answers

Bad code p1646


P1646 - Evaporative Emission (EVAP) Vent Solenoid Control Circuit

Feb 19, 2009 | 2002 Jaguar X-Type

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