Knock sensor 2 - P0333 (G66)

[phil_quebec]

Hey guys!

Did anyone get this error code in VCDS for a 4.0TT V8 engine before?


Address 01: Engine (------CEUC) Labels:. 06E-907-551-CGW.clb
Part No SW: 4G0 906 014 B HW: 4H0 906 014
Component: 4.0l V8TFSI / H61 0009
Revision: NCH61---
Coding: 1A2500326526000E1000
Shop #: WSC 03818 003 1048576
ASAM Dataset: EV_ECM40TFS0114G0906014B 001009
ROD: EV_ECM40TFS0114G0906014B.rod
VCID: 211FE613E148A75FE57-8074

2925 - Knock Sensor 2 (G66)
P0333 00 [237] - Signal too High
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 140968 km
Date: 2019.10.05
Time: 08:03:46

Engine speed: 1936.50 /min
Normed load value: 20.4 %
Vehicle speed: 112 km/h
Coolant temperature: 94 °C
Intake air temperature: 27 °C
Ambient air pressure: 1020 mbar
Voltage terminal 30: 14.371 V
Unlearning counter according OBD: 40
Engine status: COENG_RUNNING
Engine status-Test_Program_Co Eng st COMPU VERB UBYTE: 3

Readiness: 0000 0000

There are no other codes stored other than one related to the exhaust valves, so it makes me think it's just the G66 Knock Sensor going bad and/or maybe the wiring associated with it. Has anyone have experience with this code or maybe has an idea what else it can be?

For reference, there's the other code, however it doesn't make the Check Engine (MIL) light come on:

17875 - Exhaust Pressure Control Valve
P0475 00 [047] - Electrical Malfunction
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 140887 km
Date: 2019.09.30
Time: 08:15:30

Engine speed: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 9 °C
Intake air temperature: 10 °C
Ambient air pressure: 1010 mbar
Voltage terminal 30: 11.614 V
Unlearning counter according OBD: 40
Engine status: COENG_READY
Engine status-Test_Program_Co Eng st COMPU VERB UBYTE: 1

The car drives fine even with the Check Engine light ON. I don't feel any unsual movement/knock in the engine and I guess that if something was really wrong, more codes would pop up, like misfires and or timing issues. I can be wrong though. Any help is much appreciated! Thank you !

[gk1]

It could be a fluke since it happened just one time.
But from your sig you are running "Hybrid Ball Bearing Turbos". What tune?
Could have been bad gas? I assume your setup would be more sensitive than stock to variations in fuel quality.

[mintytoo]

I think he's the one running stock

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[phil_quebec]

It could be a fluke since it happened just one time.
But from your sig you are running "Hybrid Ball Bearing Turbos". What tune?
Could have been bad gas? I assume your setup would be more sensitive than stock to variations in fuel quality.

Mintytoo is correct, currently on stock tune! Actually happened 2-3 times, each time I cleared the code with VCDS but it reappeared a couple of hundred miles later. According to the Workshop Manual, replacing the G66 Knock Sensor (#2) doesn't look too complicated.

[wwhan]

Have you seen this TSB on Knock sensors?

"01 MIL on, DTCs P033300, P032800, P132200, and/or P132400 stored in ECM
01 18 68 2048391/4 May 4, 2018.

Workshop findings:
One or more of the following DTCs are logged in the engine control module (ECM), J623 (address word 0001):
DTC P032800 (Knock Sensor 1 Circuit High Input)
DTC P033300 (Knock Sensor 2 Circuit High Input)
DTC P132200 (Knock Sensor 3 Signal Too High)
DTC P132400 (Knock Sensor 4 Signal Too High)

Technical Background
OBD diagnostics are too sensitive. Replacing the knock sensor will not resolve the customer concern.

Production Solution
New software in the engine control module (ECM), J623 (address word 0001) addressed the condition.

SVM Update Instructions
1. Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions.
2. Update the ECM, J623 (address word 0001) using the SVM action code as listed in the table below, if necessary:

Model Engine, Old Software, Part Number, Old Software Version, New Software, Part Number, New Software Version, SVM Code Input
================================================== ===================================
S6/S7 MY13 CEUC 4G0906014 0011 4G0906014 0012 01A225

S6/S7 MY13 CEUC 4G0906014A 0007 4G0906014A 0008 01A225

S6/S7 MY13 CEUC 4G0906014B 0008 4G0906014B 0009 01A225"

[youngsolodolo]

I actually got the same code for a while and originally thought this post was a revival of my old post buried in these threads. Started out the same way as you after getting tuned APR stage 1. Eventually car went into limp mode. Long story short timing was off due to the adjuster in bank 2. Had all chains replaced and then on the way back home finally from the shop check engine light came on and same exact code but seemed to still run fine. Took it back to the shop and we figured out my car must have been on 104 oct tune ever since it was flashed. Put it on the correct 93 oct tune and the code has not come back for at least 5k miles (Knock on wood). It could either be bad gas, faulty sensor, or if you are tuned wrong file. Worst case timing chain but hopefully not! Have a shop with vag com check the voltage of bank 2 sensor first is my advice.

[mintytoo]

I actually got the same code for a while and originally thought this post was a revival of my old post buried in these threads. Started out the same way as you after getting tuned APR stage 1. Eventually car went into limp mode. Long story short timing was off due to the adjuster in bank 2. Had all chains replaced and then on the way back home finally from the shop check engine light came on and same exact code but seemed to still run fine. Took it back to the shop and we figured out my car must have been on 104 oct tune ever since it was flashed. Put it on the correct 93 oct tune and the code has not come back for at least 5k miles (Knock on wood). It could either be bad gas, faulty sensor, or if you are tuned wrong file. Worst case timing chain but hopefully not! Have a shop with vag com check the voltage of bank 2 sensor first is my advice.

The OP has stock tune. But good idea to check the sensor

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