P201A

Reductant Injection Valve Circuit Range/Performance Bank 2 Unit 1

DTC P201A, sometimes indicated as P201A00 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 injection valve circuit range/performance bank 2 unit 1.

If this DTC is stored, the reductant injection valve may not be opening properly. This could cause reductant to not be injected into the exhaust system, which could lead to a loss of emissions performance.
If this DTC is stored, the reductant injection valve may not be opening properly. This could cause reductant to not be injected into the exhaust system, which could lead to a loss of emissions performance.
If this DTC is stored, the reductant injection valve may not be opening properly. This could cause reductant to not be injected into the exhaust system, which could lead to a loss of emissions performance.

  • P201A: Injection Valve Circuit Range/Performance Bank 2 Unit 1
  • P201A: Reductant Injection Valve Circuit Range/Performance Bank 2 Unit 1
  • P201A: Reductant Injection Valve Circuit Range/Performance Bank 2 Unit 1
  • P201A: Reductant Injection Valve Circuit Range/Performance
  • P201A: Reductant injector, unit 1, bank 2 – circuit range/performance
  • P201A 00: Reductant injector, unit 1, bank 2 - circuit range/performance

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.

  • 076146 - ENGINE AND ENGINE COOLING:ENGINE
    UNKNOWN: Stored fault code P201A/b in engine control unit, check engine light on or engine runs rough. Mercedes-benz model c200. Model year unknown. *tt update. *tt
  • 012012 - ENGINE AND ENGINE COOLING:ENGINE
    MERCEDES BENZ: Engine vibrating, rpm fluctuations at idle or poor accelerator response with codes P2020, P0172, P2046, P201C or P201A in the engine control unit. Model C230Cl. *tt updated 1/30/08. *nj
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