Question about 1998 Jaguar XK8

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What does fault code P1586 mean

Failsafe engine mode and shows P1586 code on scanner

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6ya6ya
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Posted on Jan 02, 2017

j_del
  • 1586 Answers

SOURCE: failsafe mode

Per Jaguar's codes:

P1576 Pedal Position Not Available

I'm assuming your car is a drive-by-wire setup (instead of having a throttle cable, it'd have a potentiometer at the pedal, and the more the pedal is pressed, the greater the voltage output at the pedal, which is translated to a throttle opening percentage underhood by the computer). It sounds as if you have a problem with the pedal, or with the computer's ability to read the throttle angle you're pushing for. Does the car currently drive OK? Or are you having driveability issues? Post up a little more info and we can take it from there.

Posted on Jul 25, 2008

raygin
  • 322 Answers

SOURCE: failsafe engine mode

The failsafe mode can appear following numerous faults being detected - some faults can be momentary and register but not cause a problem. These are normally reset by just turning ignition off/on. get the fault code memory read at a garage and this may give you a clue as to a possible problem developing. Failsafe mode will give you reduced engine performance but will allow you to drive for normally some distance. If a serious problem developes your car message centre will tell you to shut off the engine or it will shut it down.
good luck.

Posted on Mar 20, 2009

  • 1 Answer

SOURCE: failsafe engine mode light comes on, codes

Just a quick mention - for about a month my XK8 low coolant light came on intermittently. This week with no notice while driving normally I got Stability Control Fail and FailSafe Engine Mode and wtih great difficulty got the car back to where I started from (less than a mile). Two days later (when got time) and after a bit of research, I tried it again - same problem and a very unhappy engine. I then disconnected the battery for 15 minutes (probably more) to clear the engine codes as well as check all the wiring and vacuum stuff I could under the hood (at a Jaguar master mechanic's recommendation). No problems found but the car would start and immediately stall with the air intake hose disconnected from the intake butterfly. After I reconnected the air intake hose, she started and purred like normal. The problem is the BATTERY... It is low - I've known it for a LONG time BUT it always started right up and never skipped a beat. I intend to replace it tonight but fully expect that's the issue. I've had the car 6 years (it's a 98) and had NO problems except a dead taillight asembly.

Hope this is of value...

Posted on Apr 22, 2009

saailer
  • 1868 Answers

SOURCE: What does Failsafe Engine Mode mean?

Hello! Fail safe mode is when the vehicle's computer detects a serious problem an allows you to "limp" off the road or highway safely.

Fail safe mode on a Jaguar is mainly caused by a dirty and gummed up throttle body. The throttle body on your auto has a protective coating, so you can not use just any cleaner. It requires a throttle body cleaner that states "safe to use with a protective coating". The butterfly valve in the throttle body will actually "stick out". This causes fail safe mode to kick in reducing the amount of power your engine can produce.

Also check the plugs on your ECM (computer) and make sure they are all seated properly.


Guru...............saailer

Posted on Dec 13, 2009

  • 1 Answer

SOURCE: my s type jaguar is showing failsafe engine mode

failsafe engine mode how to solve the problem

Posted on Dec 22, 2009

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What does code p1586


Permanent fault, Rail pressure, flowmeter, EGR valve copy sensor supply Supply voltage too low

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1 Answer

Engine Failsafe Mode is activated


It may be if you ignore the light. Check the oil level and coolant levels first if ok have the fault codes read to determine the sensor that put the light on. Repair it and go from there.. Normally the ECM goes into safe mode to protect the engine and gear box from serious damage but it depends on the driver to react promptly to stop further damage occurring.

Mar 18, 2014 | Cars & Trucks

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Oct 17, 2013 | Audi Cars & Trucks

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P1586


Hello and welcome to JA!!!
Billy :

I'm Billy and i will assist you with this.
Billy :

The codes you have (the ones not interpreted) mean the following:
Billy :

p1351: glow relay circuit faulty, p1586: power supply to rail sensor, air mass meter, EGR valve: voltage too low.
Billy :

These problems are the ones causing the no start issue...........
Billy :

I will first list the fault details:
Billy :Engine management ECU BOSCH EDC16C34Fault codeP1586After sales description of the fault codeSupply of the rail pressure sensor, the flowmeter and the EGR valve copy : Supply voltage too lowRectification priority1Description of the diagnosticsThe supply common to the pressure sensor of the fuel high pressure common injection rail, to the flowmeter and to the EGR valve copy is lower than 4,7 V for 150 msConditions of activation of the diagnosticsConsult the associated contexts for the Pcode forwarding conditionsConditions of disappearance of the faultSwitching on of the ignitionDown-grade modes if fault presentDefault value for the air flow as a function of the engine speed and of the flow injectedInhibiting of the diagnostics and air flow sensor plausibilityUse of the flow calculatedCut of all the actuators : EGR butterfly ( Turbocharger air cooler ) ; EGR electrovalve ; Bypass valve ( Intake air heater ) In all operating modesSwitching on of the warning light and/or warning messageWarning lamp MILSymptoms ( Possible customer complaints )Jerking/stallingLack of powerStarting problemSuspect areasThe sensors sharing the power supply are as followsElectrical harnessEngine management ECU (internal failure, supply, ...)Billy :Fault codeP1351After sales description of the fault codePre-heating relay circuit : Coherence ; Relay supplied and glow plugs not suppliedRectification priority1Description of the diagnosticsThe information from the preheating control unit indicates that the relay is open even though the ECU commands the closing of the relay for 2 secondsConditions of activation of the diagnosticsConsult the associated contexts for the Pcode forwarding conditionsConditions of disappearance of the faultOn switching onDown-grade modes if fault present-Switching on of the warning light and/or warning message-Symptoms ( Possible customer complaints )Lack of powerNoiseJerking/stallingStarting problemSuspect areasGlow plugElectrical harnessPre-postheating relaysBilly :

And now, the most probable reason for your problem, would be faulty wiring.
Billy :

So i suggest that you check the wiring harness thoroughly, and the fuse boxes (connectors, fuses etc.....)
Billy :

As these are the most probable culprits.
Billy :

It could be a faulty ECU (engine control unit), however, i think that faulty wiring is the most likely cause.......
Billy :

Regards,
Billy :

Billy
JACUSTOMER-jxbcz9cx- :

on further diagnostics the engine start permission is off does this point to anything

Sep 11, 2012 | Audi A4 Cars & Trucks

1 Answer

Amber light with the massage indicating Failsafe engine Mode could you please tell me what that means


another one this is a common fault this failsafe mode ,just disconnect the battery and join the leads together to clear the fault

Nov 29, 2010 | 2000 Jaguar S-Type

1 Answer

Failsafe keeps appearing


take it to jaguar and have the software checked and any fault codes removed ,

Apr 30, 2010 | 2000 Jaguar S-Type

2 Answers

Failsafe engine mode


The failsafe mode can appear following numerous faults being detected - some faults can be momentary and register but not cause a problem. These are normally reset by just turning ignition off/on. get the fault code memory read at a garage and this may give you a clue as to a possible problem developing. Failsafe mode will give you reduced engine performance but will allow you to drive for normally some distance. If a serious problem developes your car message centre will tell you to shut off the engine or it will shut it down.
good luck.

Mar 15, 2009 | 2000 Jaguar S-Type

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