Question about 2002 Audi A6

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My 2002 Audi A6 with 3.0 has the following codes diagnostic codes: 16408 =Camshaft Position Actuator B Bank 2, Timing Over-Advanced 16684 =Random/Multiple Cylinder Misfire Detected 16689 = Cylinder 5, Misfire Detected 16805 =Warm Up Catalyst Bank-1, Efficiency Below Threshold 16815 = Warm Up Catalyst Bank-2, Efficiency Below Threshold I think the catalyst errors may be caused by the misfires sending unburned fuel into the exhaust. The previous owner had recently changed the timing belt and the car ran good when I bought it. I think the problems may be related to the camshaft actuator or the cam sensors. Just my 2-cents. Any help appreciated.

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  • zaj7 Mar 20, 2011

    This 3.0 engine does not have the timing chains and the camshaft actuator like the previous V6's so the advice by the first "expert"doesn't apply.

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1. Check and replace if necessary the Camshaft Position Actuator B Bank 2. Bank 2 is the left side cylinder block bank, (driver's side for LHD vehicles). Also see if the variable camshaft mechanism movement is all right, and nothing can block it. The codes 16408 and 16684 must be eliminated definitely!
2. Then test the engine. If the code 16689 = Cylinder 5 - misfire detected, still occurs, check the spark plug, ignition coil and injector. Replace bad piece(s). The code 16689 must be eliminated definitely!
3. The codes 16805 = Warm Up Catalyst Bank-1, Efficiency Below Threshold, and 16815 = Warm Up Catalyst Bank-2, Efficiency Below Threshold, are caused by the misfires sending unburned fuel into the exhaust, and will be erased from Engine Control Module memory.

Test the car and send me back if everything is OK, or if any DTC code still remains.
Good Luck!

Posted on Mar 13, 2011

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Hi!!
I believe you're right about the 4 codes below are due to the rich mixture or unburnt fuel.

16684 =Random/Multiple Cylinder Misfire Detected 16689 = Cylinder 5, Misfire Detected 16805 =Warm Up Catalyst Bank-1, Efficiency Below Threshold 16815 = Warm Up Catalyst Bank-2, Efficiency Below Threshold
The code 16408 =Camshaft Position Actuator B Bank 2, Timing Over-Advanced. Could be due to the timing being set wrong or the CMP Sensor being defective.
Click on the following link for detail instructions to test the Camshaft Position Sensor. Note that there are two sensors, one for each bank. Bank #1 is on the side of the vehicle where the #1 cylinder is. Bank #2 is the other side. http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0900c152801c0e97
Good Luck! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.

Posted on Mar 20, 2011

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How to change a csmshsft sensor on a 2008 cadillac srx


Before you replace a part you may or may not need . Why ? What code ? Does the vehicle run ? There has been a lot of confusion on these vehicles with variable valve timing , mixing up cam sensors with camshaft actuators
DTC P0008: Engine Position System Performance Bank 1

DTC P0009: Engine Position System Performance Bank 2
The presence of DTCs P0008 and P0009 along with P0016, P0017, P0018, and P0019 indicates a possible condition with the primary timing chain and the alignment between both intermediate sprockets and the crankshaft. Or, the crankshaft reluctor wheel has moved and is no longer referenced to top dead center (TDC).


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Observe the scan tool CMP Desired, Actual, and Angle Variance parameters before a DTC sets. This may help to isolate whether a condition is specific to one camshaft, one bank, or caused by a condition with the primary crankshaft timing.



DTC Descriptors
DTC P0010: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 1

DTC P0013: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 1

DTC P0020: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 2

DTC P0023: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 2

DTC P2088: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 1

DTC P2089: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 1

DTC P2090: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 1

DTC P2091: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 1

DTC P2092: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 2

DTC P2093: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 2

DTC P2094: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 2

DTC P2095: Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit High Voltage Bank 2
DTC P0341: Intake Camshaft Position (CMP) Sensor Performance Bank 1

DTC P0342: Intake Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 1

DTC P0343: Intake Camshaft Position (CMP) Sensor Circuit High Voltage Bank 1

DTC P0346: Intake Camshaft Position (CMP) Sensor Performance Bank 2

DTC P0347: Intake Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 2

DTC P0348: Intake Camshaft Position (CMP) Sensor Circuit High Voltage Bank 2

DTC P0366: Exhaust Camshaft Position (CMP) Sensor Performance Bank 1

DTC P0367: Exhaust Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 1

DTC P0368: Exhaust Camshaft Position (CMP) Sensor Circuit High Voltage Bank 1

DTC P0391: Exhaust Camshaft Position (CMP) Sensor Performance Bank 2

DTC P0392: Exhaust Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 2

DTC P0393: Exhaust Camshaft Position (CMP) Sensor Circuit High Voltage Bank 2
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P0014: Camshaft Position, Act B - bank 1, timing over advanced
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P0010....'A' Camshaft Position Actuator Circuit (Bank 1)

P0011....'A' Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)

P0012....'A' Camshaft Position - Timing Over-Retarded (Bank 1)

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P0014....'B' Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)

P0015....'B' Camshaft Position -Timing Over-Retarded (Bank 1)

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Code Description
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P0002 Fuel Volume Regulator Control Circuit Range/Performance
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P0004 Fuel Volume Regulator Control Circuit High
P0005 Fuel Shutoff Valve Control Circuit/Open
P0006 Fuel Shutoff Valve Control Circuit Low
P0007 Fuel Shutoff Valve Control Circuit High
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P0009 Engine Position System Performance (Bank 2)
P0010 A Camshaft Position Actuator Circuit (Bank 1)
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P0012 A Camshaft Position - Timing Over - Retarded (Bank 1)
P0013 B Camshaft Position - Actuator Circuit (Bank 1)
P0014 B Camshaft Position - Timing Over - Advanced or System Performance (Bank 1)
P0015 B Camshaft Position - Timing Over - Retarded (Bank 1)
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P0017 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
P0018 Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)
P0019 Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor B)
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P0023 B Camshaft Position - Actuator Circuit (Bank 2)
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P0025 B Camshaft Position - Timing Over - Retarded (Bank 2)
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P0027 Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 1)
P0028 Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)
P0029 Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 2)
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P0032 HO2S Heater Control Circuit High (Bank 1 Sensor 1)
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P0035 Turbo Charger Bypass Valve Control Circuit High
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P0038 HO2S Heater Control Circuit High (Bank 1 Sensor 2)
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P0053 HO2S Heater Resistance (Bank 1 Sensor 1)
P0054 HO2S Heater Resistance (Bank 1 Sensor 2)
P0055 HO2S Heater Resistance (Bank 1 Sensor 3)
P0056 HO2S Heater Control Circuit (Bank 2 Sensor 2)
P0057 HO2S Heater Control Circuit Low (Bank 2 Sensor 2)
P0058 HO2S Heater Control Circuit High (Bank 2 Sensor 2)
P0059 HO2S Heater Resistance (Bank 2 Sensor 1)
P0060 HO2S Heater Resistance (Bank 2 Sensor 2)
P0061 HO2S Heater Resistance (Bank 2 Sensor 3)
P0062 HO2S Heater Control Circuit (Bank 2 Sensor 3)
P0063 HO2S Heater Control Circuit Low (Bank 2 Sensor 3)
P0064 HO2S Heater Control Circuit High (Bank 2 Sensor 3)
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P0069 Manifold Absolute Pressure - Barometric Pressure Correlation
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P0071 Ambient Air Temperature Sensor Range/Performance
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P0073 Ambient Air Temperature Sensor Circuit High
P0074 Ambient Air Temperature Sensor Circuit Intermittent
P0075 Intake Valve Control Solenoid Circuit (Bank 1)
P0076 Intake Valve Control Solenoid Circuit Low (Bank 1)
P0077 Intake Valve Control Solenoid Circuit High (Bank 1)
P0078 Exhaust Valve Control Solenoid Circuit (Bank 1)
P0079 Exhaust Valve Control Solenoid Circuit Low (Bank 1)
P0080 Exhaust Valve Control Solenoid Circuit High (Bank 1)
P0081 Intake Valve Control Solenoid Circuit (Bank 2)
P0082 Intake Valve Control Solenoid Circuit Low (Bank 2)
P0083 Intake Valve Control Solenoid Circuit High (Bank 2)
P0084 Exhaust Valve Control Solenoid Circuit (Bank 2)
P0085 Exhaust Valve Control Solenoid Circuit Low (Bank 2)
P0086 Exhaust Valve Control Solenoid Circuit High (Bank 2)
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P0088 Fuel Rail/System Pressure - Too High
P0089 Fuel Pressure Regulator 1 Performance
P0090 Fuel Pressure Regulator 1 Control Circuit
P0091 Fuel Pressure Regulator 1 Control Circuit Low
P0092 Fuel Pressure Regulator 1 Control Circuit High
P0093 Fuel System Leak Detected - Large Leak
P0094 Fuel System Leak Detected - Small Leak
P0095 Intake Air Temperature Sensor 2 Circuit
P0096 Intake Air Temperature Sensor 2 Circuit Range/Performance
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P0098 Intake Air Temperature Sensor 2 Circuit High
P0099 Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic

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