P202D

Reductant Leakage

DTC P202D, sometimes indicated as P202D00 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 leakage.

Reductant leakage can be caused by a number of factors, including a defective reductant tank, a bad seal, or a leaky hose. If your reductant tank is defective, you may need to replace it. If your seal is bad, you may need to replace it or tighten it. If your hose is leaking, you may need to replace it.

  • P202D: Leakage
  • P202D: Reductant Leakage
  • P202D: Reductant leakage
  • P202D 00: Reductant leakage

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.

  • CBR-2298 202307 - ENGINE AND ENGINE COOLING
    VOLVO: Cbr: volvo def dosing valve diagnostic trouble codes (dtc) P202D00, P208E00, P103B00 - us10+obd13 and newer emissions
  • CBR-2303 202307 - ENGINE AND ENGINE COOLING
    MACK: Cbr: mack def dosing valve diagnostic trouble codes (dtc) P202D00, P208E00, P103B00 - us10+obd13 and newer emissions
  • KC-771 - FUEL SYSTEM, DIESEL
    MACK: (back office only) mack chassis - diagnosing the aftertreatment control module dtcs P202D, P208E, P20E8 - obd13 (commonly model year 2014); newer chassis after reviewing other solutions
  • K16925952 - ELECTRICAL SYSTEM
    VOLVO: ** tech tip ** tt - 007 - 2015 - diagnosing the aftertreatment control module dtcs P202D, P208E, P20E8 - obd13 (commonly model year 2014); newer chassis after reviewing other solutions
  • K16925952 - EQUIPMENT:ELECTRICAL
    MACK: ** tech tip ** tt - 007 - 2015 - diagnosing the aftertreatment control module dtcs P202D, P208E, P20E8 - obd13 (commonly model year 2014); newer chassis after reviewing other solutions
  • K16925952 - ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR
    MACK: ** tech tip ** tt - 007 - 2015 - diagnosing the aftertreatment control module dtcs P202D, P208E, P20E8 - obd13 (commonly model year 2014); newer chassis after reviewing other solutions
  • K16925952 - ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR
    VOLVO: ** tech tip ** tt - 007 - 2015 - diagnosing the aftertreatment control module dtcs P202D, P208E, P20E8 - obd13 (commonly model year 2014); newer chassis after reviewing other solutions
  • ASI-44312 - FUEL SYSTEM, DIESEL
    FORD: Ford: the malfunction indicator light (mil) on and diagnostic trouble codes (dtc) P20E8, P202D, P204B are caused by the diesel exhaust fluid (def) maybe contaminated from petroleum based product such as diesel fuel. Model 2011-2014 f-supe
  • ASI-44125 - ENGINE AND ENGINE COOLING:ENGINE:DIESEL
    FORD: Ford: contamination of diesel exhaust fluid (def) from petroleum based product (such as diesel fuel), trucks may exhibit malfunction indicator light (mil) with dtc P20E8, P202D and/or P207F, causing rubber seals and o rings to swell and/or
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