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Author Topic: Fault Code (16684 and 16685)  (Read 9202 times)

Offline hotdogsmale

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Fault Code (16684 and 16685)
« on: 06 August 2012, 08:49 »
Hi guys got a 1.4 16v golf mk4 just driving home and lost power and started a missfire and pulled up the codes (16684 and 16685) which is random missfire and showing on cylinder 1. Any advise on what you would change first as it will probaly be a process of eliminatiion lol

Cheers Josh
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Offline golfyste

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Re: Fault Code (16684 and 16685)
« Reply #1 on: 06 August 2012, 09:00 »
16684/P0300/000768 - Random/Multiple Cylinder Misfire Detected

Possible Causes
Air Intake System leaking
Fuel Supply faulty
Injector(s) faulty
Ignition Cable(s) and/or Spark Plug(s) faulty
Ignition Coil(s) faulty
Exhaust Gas Recirculation (EGR) Valve (N18) stuck/open
Camshaft Position Sensor (G40) faulty

Possible Solutions
Check Misfire Recognition
Check Air Intake System
Check Fuel Supply
Check Injector(s) and Injector Sealing
Check Ignition Cable(s) and Spark Plug(s)
Check Ignition Coil(s)
Check Exhaust Gas Recirculation (EGR) Valve (N18)
Check Camshaft Position Sensor (G40)
Special Notes
This DTC indicates that one or multiple cylinders are misfiring, but the ECU fails to identify the cylinder.

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16685/P0301/000769 - Cylinder 1 Misfire Detected

Possible Causes
Ignition system
Fuel injectorsI
Fuel pressure
Running out of fuel
EVAP canister purge valve
Evaporative emission system
Low compression
Base engine problems
Controle Module damaged
Special Notes
This feature search for engine misfire in a specific cylinder. Most of the time the cause for a misfire is a lack of combustion in a cylinder due to absence of spark, poor fuel metering, or poor compression.

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Found on ..... http://wiki.ross-tech.com/wiki/index.php/Main_Page
« Last Edit: 06 August 2012, 10:50 by golfyste »
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Offline Wazzzer

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Re: Fault Code (16684 and 16685)
« Reply #2 on: 06 August 2012, 10:48 »
Do they have a single coil for each cylinder? If so just move the coil packs around and see if the misfire moves. If it does you know you'll need a new coil pack
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Offline hotdogsmale

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Re: Fault Code (16684 and 16685)
« Reply #3 on: 06 August 2012, 13:20 »
im pretty sure they are not single coil for each one but will double check later :-) thanks for quick responces :-)
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Offline hotdogsmale

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Re: Fault Code (16684 and 16685)
« Reply #4 on: 07 August 2012, 08:42 »
running on ht leads. runs fine on idle got it warm went out for a drivecand happened straight away seems to be when gets hot. ht leads first? cheers
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Offline hotdogsmale

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Re: Fault Code (16684 and 16685)
« Reply #5 on: 12 August 2012, 12:15 »
sorted! :) crack on ht lead cylinder 1 thanks guys
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