A8 error code PO116

[coomsey]

Hi all can anyone help me I had an error code PO116 come up which is for coolant temperature replaced with new one but the error code came back within days is there any other coolant sensors on the car that effects the code PO116. Thanks Tony

[Architex mA8tey]

16500/P0116/000278 - Engine Coolant Temp. Sensor (G62): Implausible Signal

Possible Symptoms

• Starting the engine when engine is warmish or warm, idle rpm immediately is 1200 - 3000 rpm.
  
  • Diesel: an indication is extreme long time burning time of the glow indication light.
    

  [*]With all engine temperatures seldom idle rpm will vary between 900 - 1000 rpm.

  [*]With engine warm (90 °C) the engine temperature suddenly drops (70 °C) and slowly comes back to 90 °C.

Possible Causes

• Wiring and/or connections faulty
  
• Engine Coolant Sensor (G62) faulty
  

Possible Solutions

• Check wiring and connections
  
• Replace Engine Coolant Sensor (G62)
  

Special Notes

• In MY 1995-2002 (?) in Europe at VW-cars the G2/G62 had the bad reputation of breaking down often. The default G2/G62 is black and all replacements are green.
  
• Check if the correct Coolant Fan Control Module/Relay is installed (check part number using parts catalogue)!
  

.

Looks like it could be wiring as well as the sensor itself so you need to get wiring checked out

Edited December 18, 2011 by Architex mA8tey