高人求教： 本人AudiQ5昨天发动机报警灯亮，机油，温度指示正常，能正常行驶但感觉车身有些振动。送去garage检修。今晨通知车无法启动，发动机全坏，错误码读不出来，需要全部更换发动机。感觉蹊跷，点

[小懵]

本人AudiQ5昨天发动机报警灯亮，机油，温度指示正常，能正常行驶但感觉车身有些振动。送去garage检修。今晨通知车无法启动，发动机全坏，错误码读不出来，需要全部更换发动机。感觉蹊跷. 请教高人点解！谢先。

 

[arthur000]

拖去dealer检一下 开进去的车坏在车行里你也信啊

 

[我去年买了个表]

过保修期没有？

 

[mianfei]

2011 model?
yes, engine may fail around 90000KM, if you are not luck enough.
It's time to buy a new car anyway, that is why it is luxury car.

 

[mianfei]

More to read:http://www.carcomplaints.com/Audi/Q5/2011/engine/engine.shtml

 

[bianhetao]

有点扯。。。。。应该开始就去dealer啊

 

[小懵]

谢谢各位指点。 过保修期了。读出 err code P0016：camshaft& crankshaft position correlation Bank 1.
值得打开来修， 还是换整个发动机？

 

[mianfei]

See Common mistakes when diagnosing the P0016 code



https://www.yourmechanic.com/articl...ft-position-correlation-bank-1-by-jay-safford
P0016 code definition
Camshaft Position A - Camshaft Position Correlation (Bank 1)

What the P0016 code means
P0016 is the OBD-II generic code indicating that the camshaft position sensor for bank 1 does not correlate to the signal from the crankshaft position sensor.

What causes the P0016 code?

• The camshaft timing is out of position due to the timing chain jumped teeth.
  
  
• The camshaft phaser is out of position due to problems with phaser.
  
  
• The oil has flow to the phaser is impeded from having an incorrect oil viscosity or partly clogged passages.
  
  
• The Oil Control Valve (OCV) has a restriction in the OCV filter.
  

What are the symptoms of the P0016 code?

• The Check Engine Light comes on.
• The engine may have a reduction in power or start hard.
• The engine may run erratically, stall, hesitate, or run rough.
• The engine's fuel mileage will decrease.

Note: The erratic drive complaints will vary depending on the failure.

How does a mechanic diagnose the P0016 code?

• Visually checks for problems with the connections or wiring of the OCV, camshaft and crankshaft sensors
  
  
• Verifies that the engine oil is full and that the oil is clean with the correct viscosity
  
  
• Scans and documents the engine codes and views the freeze frame data to see when the code was set
  
  
• Resets the Check Engine Light and road tests again to see if code returns
  
  
• Commands the OCV on and off to see if the camshaft sensor is indicating timing changes for the bank 1 camshaft
  
  
• Performs the manufacturer’s tests for the P0016 code to determine the cause of the code
  

Note: The manufacturer's recommended pinpoint test is used to narrow down the problem. Following the recommended tests will help with diagnosis without replacing the wrong parts.

Common mistakes when diagnosing the P0016 code

• Not verifying the failure and codes before attempting any repairs
  
  
• Not doing a visual check for possible problems with the wiring or connections to the components
  
  
• Not doing all pinpoint test steps to help prevent misdiagnosis of good components
  
  
• Not replacing parts directed by the pinpoint test or visually checking them to make sure they are bad
  

How serious is the P0016 code?

• The engine can have stalling or hesitations along with hard starting.
  
  
• The timing chain may have problems with tensioners or guides and can lead to major engine damage if the valves hit the pistons.
  
  
• Driving the vehicle for a prolonged time with the camshafts out of time may cause additional internal engine problems, depending on the failed part.
  

What repairs can fix the P0016 code?

• Resetting the fault codes and performing a road test
• Replacing the camshaft sensor on bank 1
• Repairing the wiring or connection to the camshaft OCV or camshaft sensor
• Replacing the camshaft OCV for bank 1 exhaust camshaft
• Replacing the timing chain and guides

Additional comments for consideration regarding the P0016 code

• The code P0016 can be due to the camshaft sensor for bank 1 having an internal intermittent problem due to vibration or heat. These problems may or may not be able to be verified. If repeated attempts to find the failure end up in not verifying the code, then suspect a failing camshaft sensor.

 

[mianfei]

Audi timing chain failure is common

 

[小懵]

I read that too just now. Wondering if it is worthy to try replacing OCV, or timing chain...
That shall be far less than $5000 engine +~$2000 labor, right?

 

[猿来你也在]

楼主去哪个车行查的？严重的问题还是去dealer放心一些

 

[小懵]

谢谢！听您建议我们明天把车拖去Audi。

 

[eric.jiang]

别吓我， 我是A4， 跟Q5发动机一样

 

[:-)(-:]

换发动机非常贵, 如果是其他原因导致的发动机损坏, 换了也可能复发.
哪年的车? 还有保修吗?

 

[mianfei]

要相信欧洲车和日本车的质量。肯定是出了质保期才会坏，厂家这点把握还是有的。