Hello,
2012 245hp V6 TDI Touareg 235tkm
This fall, I've smelled exhaust fumes around the car when it's running, also a couple of times in the cabin while under way on low speed.
I've also noted slight change in the engine behaviour. A bit rougher idle and slightly circulating noise when driving cold.
Yesterday, while towing a light trailer, I kicked down in an uphill. The engine lost power, the glow-plug light started blinking and the car went into limb mode
I shut the car off and started again --> the car ran as normal and I drove home some 100kms - no problem.
Today, I inspected the engine with VCDS and got following two faults from engine:
2 Faults Found:
5060 - Supply Voltage for Fuel Injector Group A
P2146 00 [096] - Open Circuit
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 235878 km
Date: 2021.12.04
Time: 14:56:21
Engine RPM: 3821.00 /min
Normed load value: 100.0 %
Vehicle speed: 91 km/h
Coolant temperature: 89 °C
Intake air temperature: -2 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.280 V
Unlearning counter according OBD: 38
Allowed number of injections-Bits 0-7: 3
Injection release status-Bits 0-7: 56
Desired injection characteristic-Bits 0-7: 56
Mean injection quantity: 61.31 mg/stroke
Rail pressure regulation: status-Bits 0-7: 5
Fuel high-pressure: actual value: 1928500 hPa
Control Module temperature: 6.5 °C
5061 - Supply Voltage for Fuel Injector Group B
P2149 00 [096] - Open Circuit
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 235878 km
Date: 2021.12.04
Time: 14:56:21
Engine RPM: 3933.50 /min
Normed load value: 99.6 %
Vehicle speed: 91 km/h
Coolant temperature: 89 °C
Intake air temperature: -2 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.340 V
Unlearning counter according OBD: 38
Allowed number of injections-Bits 0-7: 3
Injection release status-Bits 0-7: 56
Desired injection characteristic-Bits 0-7: 56
Mean injection quantity: 62.48 mg/stroke
Rail pressure regulation: status-Bits 0-7: 5
Fuel high-pressure: actual value: 1818400 hPa
Control Module temperature: 6.5 °C
Readiness: 0 0 0 0 0
So, I searched previous posts and noted that this could be a case of a leaking injector seal. e.g.
Help - V6 TDI 'black death'?
www.clubtouareg.com
I then ran the injector deviation analytics with VCDS and noted my #3 injector is on the plus by +0.6-0.7mg/stroke.
Decided to run a 3mins spin and record the deviations while driving. Noted that in a short acceleration the positive deviation of the #3 injector grew to 3.5mg/stroke while #6 is deviating almost symmetrically downwards.
Attached a picture with the graphs from the 3mins spin.
Question:
All help much appreciated!
![Image]()
T: Touarekki
2012 245hp V6 TDI Touareg 235tkm
This fall, I've smelled exhaust fumes around the car when it's running, also a couple of times in the cabin while under way on low speed.
I've also noted slight change in the engine behaviour. A bit rougher idle and slightly circulating noise when driving cold.
Yesterday, while towing a light trailer, I kicked down in an uphill. The engine lost power, the glow-plug light started blinking and the car went into limb mode
I shut the car off and started again --> the car ran as normal and I drove home some 100kms - no problem.
Today, I inspected the engine with VCDS and got following two faults from engine:
2 Faults Found:
5060 - Supply Voltage for Fuel Injector Group A
P2146 00 [096] - Open Circuit
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 235878 km
Date: 2021.12.04
Time: 14:56:21
Engine RPM: 3821.00 /min
Normed load value: 100.0 %
Vehicle speed: 91 km/h
Coolant temperature: 89 °C
Intake air temperature: -2 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.280 V
Unlearning counter according OBD: 38
Allowed number of injections-Bits 0-7: 3
Injection release status-Bits 0-7: 56
Desired injection characteristic-Bits 0-7: 56
Mean injection quantity: 61.31 mg/stroke
Rail pressure regulation: status-Bits 0-7: 5
Fuel high-pressure: actual value: 1928500 hPa
Control Module temperature: 6.5 °C
5061 - Supply Voltage for Fuel Injector Group B
P2149 00 [096] - Open Circuit
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 235878 km
Date: 2021.12.04
Time: 14:56:21
Engine RPM: 3933.50 /min
Normed load value: 99.6 %
Vehicle speed: 91 km/h
Coolant temperature: 89 °C
Intake air temperature: -2 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.340 V
Unlearning counter according OBD: 38
Allowed number of injections-Bits 0-7: 3
Injection release status-Bits 0-7: 56
Desired injection characteristic-Bits 0-7: 56
Mean injection quantity: 62.48 mg/stroke
Rail pressure regulation: status-Bits 0-7: 5
Fuel high-pressure: actual value: 1818400 hPa
Control Module temperature: 6.5 °C
Readiness: 0 0 0 0 0
So, I searched previous posts and noted that this could be a case of a leaking injector seal. e.g.
Help - V6 TDI 'black death'?
V6 TDI Injector seals leaking
Just info for owner who have the not so uncommon fuel injector compression sealing washer leaking on both 7L engines and 7P engines leaking injectors leave a black tar like substance around the exhaust manifolds also in bad cases a huffing sound and exhaust gas smell in the cabin.. Seal for...
www.clubtouareg.com
I then ran the injector deviation analytics with VCDS and noted my #3 injector is on the plus by +0.6-0.7mg/stroke.
Decided to run a 3mins spin and record the deviations while driving. Noted that in a short acceleration the positive deviation of the #3 injector grew to 3.5mg/stroke while #6 is deviating almost symmetrically downwards.
Attached a picture with the graphs from the 3mins spin.
- x axis is time in seconds
- y axis is deviation mg/stroke
- lines are the different injectors
Question:
- is it propable that the limb mode is resulting from the injector deviations / possible leak?
- any other harm possibly caused by this? may have driven some 2-3000kms with the symptoms (fumes from under the hood and slightly changed idle)
All help much appreciated!
T: Touarekki
