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Engine Speed Sensor | 00801

 
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Post09-01-2018, 17:59    Subject: Engine Speed Sensor | 00801 Quote

Hello.

The car stalled while driving. Audi A6 2.7 TDI Highline.
It has always had trouble starting, and it only fires up briefly as if it's not getting enough diesel fuel.
and went out.
What remained on the tachometer when the engine was turned off was approximately 300 RPM.

I can only run the Autoscan this weekend.
Here's the scan of the error.

Saturday, January 6, 2018, 4:05:39 PM: 30318
VCDS version: RKS 17.8.0 running on Windows 7 x64.
http://shop.dieselschrauber.de

Address 01: Engine Control Module
Label file: DRV\059-907-401-CAN.clb
Control unit part number: 4F7 910 401 K. Hardware version: 4F0 907 401 E.
Component and/or version: 2.7 TDI EDC17G000SG 0090.
Encoding: 010D002C18070128
Operating number: WSC 54169 001 1048576
VCID: 2B5361068A735E1E0F-807E
5 error codes found:

001653 - Spark plug, cylinder 5 (Q14)
P0675 - 000 - Electrical fault in the circuit.
Environmental conditions:
Error status: 01100000
Error priority: 2
Error frequency: 1.
Lost Count: 255
Mileage: 270,678 km
Time: 0.
Date: 2017.11.25
Time: 10:46:47

Environmental conditions:
Speed: 798 RPM
Speed: 4.5 km/h
Voltage: 13.00 V
Temperature: 29.7°C
Lambda: 21.9%
Temperature: 11.7°C

001652 - Spark plug, cylinder 4 (Q13)
P0674 - 000 - Electrical fault in the circuit.
Environmental conditions:
Error status: 01100000
Error priority: 2
Error frequency: 1.
Lost Count: 255
Mileage: 271,142 km
Time: 0.
Date: 2017.12.03
Time: 15:23:48

Environmental conditions:
Speed: 861 RPM
Speed: 0.0 km/h
Voltage: 13.60 V
Temperature: 8.1°C
Lambda: 22.7%
Temperature: 1.8°C

000801 - Sensor for motor speed (G28).
P0321 - 000 - Implausible signal - Warning light ON.
Environmental conditions:
Error status: 11100000
Error priority: 2
Error frequency: 12
Lost Count: 255
Mileage: 272,851 km
Time: 0.
Date: 2018-01-06
Time: 15:26:01

Environmental conditions:
Speed: 2877 RPM
Speed: 89.6 km/h
Binary value: 00000000
Voltage: 14.21 V
Speed: 1495 RPM
Binary value: 00000110
Speed: 2961 RPM

005000 - Control unit defective - Electronic throttle monitoring.
P1388 - 005 - Intermittent.
Environmental conditions:
Error status: 00100101
Error priority: 2
Error frequency: 1.
Lost Count: 255
Mileage: 272,851 km
Time: 0.
Date: 2018-01-06
Time: 15:26:02

Environmental conditions:
Speed: 2667 RPM
Speed: 73.9 km/h
Voltage: 2,550 V
Temperature: 19.8°C
Voltage: 0.740 V
Voltage: 0.360 V
Binary value: 00000011

005000 - Control unit defective - Electronic throttle monitoring.
P1388 - 000 - - Intermittent.
Environmental conditions:
Error status: 00100000
Error priority: 2
Error frequency: 1.
Lost Count: 255
Mileage: 272,851 km
Time: 0.
Date: 2018-01-06
Time: 15:26:02

Environmental conditions:
Speed: 2667 RPM
Speed: 73.9 km/h
Injection amount: 0.0 mg/hour.
Binary value: 00000000
Key press ratio: 0.0%
(no unit): 111.0
(no unit): 0.0


Readiness: 1 1 0 0 0

Off to the workshop.

They towed the car and replaced the glow plugs. It's working again, but it definitely shouldn't have been that.
Very concerning for me.

The service was performed approximately 14,000 km ago, including a replacement of the diesel filter and other components.
give someone a tip

Best regards,


Translated on 08-08-2026, 14:44.
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Post09-01-2018, 18:11    Subject: Engine Speed Sensor | 00801 Quote

Hello,

Quote:
005000 - Defective control unit - Electronic throttle monitoring.
P1388 - 005 - - Intermittent/Sporadic.
Environmental conditions:
Error status: 00100101
Error priority: 2.
Error frequency: 1.
Lost counter: 255
Mileage: 272,851 km
Time: 0.
Date: 2018-01-06
Time: 15:26:02

That would worry me more. A motor is unlikely to stall simply because the glow plugs aren't working, even though with that mileage, all six should probably be replaced.

Given that engine control units rarely fail completely, I would carefully inspect the wiring to the engine control unit (especially the wiring leading to the crankshaft position sensor) for any signs of chafing or damaged cables. Also, check all fuses and look for any electrical disturbances within the vehicle's system that could cause the engine control unit to malfunction.

Best regards, Rainer.


Translated on 08-08-2026, 14:58.
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Glatze



Joined: 03/28/2014
Posts: 29
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Post09-01-2018, 19:03    Subject: Engine Speed Sensor | 00801 Quote

Hello.

ok danke
I forwarded it like that once.

Is the fuse located at the front of the engine compartment?
I also think I might have hit the rev limiter.
And then he left.

So, I would have had to wait for the bus to finish its route, and then I could have driven to the workshop, right?



Best regards,


Translated on 08-08-2026, 15:00.
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