Difference between revisions of "16556/P0172/000370"

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==== Possible Symptoms ====
 
==== Possible Symptoms ====
  
−
* Irregular behaviour
+
* Irregular behavior
  
 
==== Possible Causes ====
 
==== Possible Causes ====
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* Improper seated engine oil dipstick
 
* Improper seated engine oil dipstick
 
* Stuck EGR valve
 
* Stuck EGR valve
−
* Oil overfill
+
* Oil Overfill (HPFP leaking fuel into oil)
 
* Cam timing
 
* Cam timing
 
* Cylinder compression
 
* Cylinder compression
 
* Exhaust leaks before or near HO2Ss.
 
* Exhaust leaks before or near HO2Ss.
 +
 +
==== Special Notes ====
 +
[[Fuel Trim Info]]
 +
 +
* For the Tiguan with the 2.0T DGUE engine that has one or more of the following fault codes, please see TSB 054615 for possible ECM update and hardware update.
 +
** P0172, P0300, P0301, P0302,P0303, P0304, P0441, P0456, P060C, P2440 and/or P2450
 +
*** https://static.nhtsa.gov/odi/tsbs/2019/MC-10162819-0001.pdf  nhtsa.gov
  
 
[[Category:Fault Codes]]
 
[[Category:Fault Codes]]

Latest revision as of 14:14, 2 August 2024

16556/P0172 - System Too Rich, Bank 1

Possible Symptoms

  • Irregular behavior

Possible Causes

  • Fuel system
  • Excessive fuel pressure
  • Leaking or contaminated fuel injectors
  • Leaking fuel pressure regulator
  • Low fuel pressure or running out of fuel
  • Vapor recovery system
  • Air leaks after the MAF
  • Vacuum leaks
  • Improper seated engine oil dipstick
  • Stuck EGR valve
  • Oil Overfill (HPFP leaking fuel into oil)
  • Cam timing
  • Cylinder compression
  • Exhaust leaks before or near HO2Ss.

Special Notes

Fuel Trim Info

  • For the Tiguan with the 2.0T DGUE engine that has one or more of the following fault codes, please see TSB 054615 for possible ECM update and hardware update.
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