Test Procedure

2010 Ford Taurus SEL, FWDSECTION Test Procedure
  1. QB1 DIAGNOSTIC TROUBLE CODES (DTCS) P0603, P1633 AND P2610: PRELIMINARY DIAGNOSIS 
    NOTE: The DTC P2610 will not reset after the DTCs are cleared. If the DTC P2610 is retrieved before the DTCs are cleared, GO to  QB6.
    • Carry out a visual inspection.
    • Retrieve and record all DTCs.
    • Record the freeze frame data.
    • Clear all the DTCs.
    • Carry out the self-test.

    Are DTCs P0603, P1633 or P2610 present? 

    Yes No
    For DTCs P0603 and P1633, GO to  QB2.
    For DTC P2610, GO to  QB6.
    Unable to duplicate the condition. CHECK for a loose connection, and damaged or corroded terminals. WIGGLE the harness attempting to recreate the concern. REPAIR as necessary. REFER to SYMPTOM CHARTS , GO to PINPOINT TEST QT , if a driveability concern exists.
  2. QB2 DTCS P0603 AND P1633: CHECK THE 12-VOLT BATTERY TERMINALS 
    NOTE: If the KAPWR is interrupted to the PCM when a breakout box is installed or the battery is disconnected, DTC P0603/P1633 can be generated on the first power-up.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.