rickb Posted January 11, 2014 Report Share Posted January 11, 2014 HI Just got one of the code readers and came up with two engine faults1795017978Unfortunately both are not in the supplied code reference list so no idea what they areAnyone know what they meanThe problem is engine died at traffic lights. Then would not start till battery flat, recharged battery now starts but immediately stops. IMMOBILISER??? Both keys I have show same symton, have checked all fuses. Thanks Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted January 11, 2014 Report Share Posted January 11, 2014 17950/P1542/005442 - Angle Sensor 1 for Throttle Actuator (G187): Implausible SignalPossible SymptomsMalfunction Indicator Lamp (MIL) activePossible CausesAngle Sensors 1/2 for Throttle Actuator (G187/G188) faultyPower Supply for Angle Sensors 1/2 for Throttle Actuator (G187/G188) faultyWiring/Connector(s) from/to Angle Sensors 1/2 for Throttle Actuator (G187/G188) faultyPossible SolutionsCheck Angle Sensors 1/2 for Throttle Actuator (G187/G188)See Measuring Value Blocks (MVB), usually MVB 062Power Supply for Angle Sensors 1/2 for Throttle Actuator (G187/G188) faultyWiring/Connector(s) from/to Angle Sensors 1/2 for Throttle Actuator (G187/G188) faulty17978/P1570/005488 - Engine Start Blocked by ImmobilizerPossible SymptomsEngine starting but stalling immediatelyPossible CausesKey(s) not matchedInstrument Cluster not matchedEngine Control Unit (ECU) not matchedEngine Control Unit (ECU) Power Supply faultyPossible SolutionsCheck for Fault Codes in Immobilizer itself (part of Instrument Cluster in many cars, but separate Immobilizer Control Module in some)Check Immobilizer Measuring Values (usually in Instrument Cluster OR Immobilizer Control Module)Match Key(s)/Instrument Cluster/Engine Control Unit (ECU)Check Engine Control Unit (ECU) Power Supply (Relay)Special NotesIn case of Engine Starting Issues please make sure that you are really experience an Immobilizer related Problem! Even if the Immobilizer engages, the Engine will still start fine but cut out after 2-3 Seconds. If you are NOT experiencing this behavior (e.g. Engine doesn't start at all) your Problem is very likely NOT Immobilizer related.May be stored in Combination with 01176 - Key: Signal too Low in Immobilizer Control Module.If no other immobilizer related fault codes are stored and the immobilizer related meas. blocks are fine except Engine Start not allowed, in rare occasions it helps to try cold-booting the car. Remove both battery cables from the battery. Short the battery cables together (away from the battery) for about 15 seconds. Reconnect the battery. (Example)Low battery voltage (including a faulty battery) may cause Immobilizer system malfunctions and testing should be done only with a known good battery installed. Quote Link to comment Share on other sites More sharing options...
rickb Posted January 13, 2014 Author Report Share Posted January 13, 2014 hi thanks for info. could the throttle body problem cause the immobiliser problem or vice versa? thinking of just replacing throttle body and seeing what happens Quote Link to comment Share on other sites More sharing options...
rickb Posted January 13, 2014 Author Report Share Posted January 13, 2014 Any friendly member who has vagcom and experience near bagshot surrey who can help Quote Link to comment Share on other sites More sharing options...
rickb Posted January 13, 2014 Author Report Share Posted January 13, 2014 OK i have inspected throttle body, and recharged fully the battery. Now only getting fault 17950 which is throttle body angle sensor no longer 17978 immobiliser BUT the car still starts and immediately stops. SO is the throttle body issue causing the immobiliser to kick in??? Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted January 13, 2014 Report Share Posted January 13, 2014 I don't think so, if it starts fine on the button and then cuts out after a second or two highly likely to be the immobiliserTry using a different key Quote Link to comment Share on other sites More sharing options...
rickb Posted January 14, 2014 Author Report Share Posted January 14, 2014 hi thanks have tried both the keys I have which show exactly same problems Quote Link to comment Share on other sites More sharing options...
rickb Posted January 25, 2014 Author Report Share Posted January 25, 2014 HI AGAIN I decided to buy a cheap replacement throttle body to see if the car would start and so illiminate the immobiliser or ecu which was my best guess.Bought one, fitted it and car started and ran very rough. Cleaned replacement but old throttle body and tried again a few times and it idles at about 1200 rpm but will not really increase revs when using throttle pedal. Now get error codes 17989 and 17950 which suggests need to do a new basic setting of throttle body but dont have the kit Anyone got the kit for this or can advise how to do it. I am in bagshot surrey m3 junction 3 Thanks Quote Link to comment Share on other sites More sharing options...
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