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Home >> Ford >> 2022 >> Transit Connect Titanium, Gas/Ethanol >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Engine Controls - Powertrain DTC Charts & Descriptions (Diesel)) >> Diagnostic Trouble Code (DTC) Charts And Descriptions >> DTC P0170 - Fuel Trim (Bank 1)

DTC P0170 - Fuel Trim (Bank 1)

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P0170 - FUEL TRIM (BANK 1)

Description:  This DTC sets when the error in the air to fuel ratio exceeds a calibrated limit.
Possible Causes: 
  • Restricted air filter
  • Biased or damaged mass airflow (MAF) sensor
  • Damaged fuel injector
  • Damaged exhaust gas recirculation (EGR) valve
  • Intake air system or crankcase ventilation system leak
  • Damaged fuel rail pressure sensor
  • Damaged fuel pressure control valve
  • Contaminated or damaged NOx12 sensor
Diagnostic Aids:  This DTC may be accompanied by other DTCs. Diagnose all other DTCs first.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST MX .
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