P20E9

Reductant Pressure Too High

DTC P20E9, sometimes indicated as P20E900 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing reductant pressure too high.

  • P20E9: Reductant Pressure Too High
  • P20E9: Reductant pressure – pressure too high
  • P20E9 00: Reductant pressure - pressure too high

DTC Trouble Code Search
Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

  • A011912 20343598 - EQUIPMENT
    AUDI: This bulletin contains repair instructions for when a mil is on and dtc P20E900 or P20FE00 is stored in the ecm.
  • A011881 2034359- - ENGINE (PWS)
    AUDI: This bulletin contains repair instructions for when a mil is on and dtc P20E900 or P20FE00 is stored in the ecm.
  • A011880 2034359- - EQUIPMENT ADAPTIVE/MOBILITY
    AUDI: This bulletin contains repair instructions for when a mil is on and dtc P20E900 or P20FE00 is stored in the ecm.
  • A011313 2034359- - ENGINE (PWS)
    AUDI: Mil on. Dtc P20E9 is stored in the engine control module (ecm). In vehicles produced during a certain period, the adblue filter seal within the level sensor module may have been damaged during the assembly process. This damaged seal can all
  • 167-B1528-12 - EQUIPMENT:ELECTRICAL
    HINO: Sb-15-031 foreign debris in the def (diesel exhaust fluid) tank may cause the scr (selective catalyst reduction) system to malfunction. This can result in dtc?S (diagnostic trouble codes) P20E8 or P20E9 - def pressure abnormality. An inlet
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