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HOMESERVICE MANUALSBUICK1999REGAL LSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 3 (COMPUTER RELEARN PROCEDURES)COMPUTER RELEARN PROCEDURES"W" BODYCRANKSHAFT POSITION (CKP) SENSOR VARIATION LEARN PROCEDURE (LUMINA 3.1L & MONTE CARLO 3.1L)
1999 Buick Regal LS

Crankshaft Position (CKP) Sensor Variation Learn Procedure (Lumina 3.1L & Monte Carlo 3.1L)

1999 Buick Regal LSSECTION Crankshaft Position (CKP) Sensor Variation Learn Procedure (Lumina 3.1L & Monte Carlo 3.1L)
WARNING: This page does not describe the selected car, but rather 38 other vehicles, including the 1998 Saturn SW2, 1998 Saturn SW1, 1998 Saturn SL2, 1998 Saturn SL1, and 1998 Saturn SL. However, it is still accessible from the selected car via links, so may be relevant.
  1. Procedure must be performed if any of the following have been done or exist:
    • EEPROM was reprogrammed.
    • If Diagnostic Trouble Code (DTC) P1336 exists.
    • If crankshaft, crankshaft position sensor, engine, Powertrain Control Module (PCM) or vibration damper have been replaced.
  2. CKP sensor variation compensating values are stored in Powertrain Control Module (PCM) after a learn procedure has been performed. If actual CKP sensor values are not within specification, Diagnostic Trouble Code (DTC) P0300 will be stored in the PCM.
  3. Using scan tool, check for stored DTCs. See the appropriate TESTS W/CODES article in ENGINE PERFORMANCE. If no DTCs exist, or if DTC P1336 exists, go to next step. If any DTCs exist except for P1336, perform test procedures for specified DTC and repair as necessary. See the appropriate TESTS W/CODES article in ENGINE PERFORMANCE. Ensure all DTCs are cleared from PCM. Go to next step.
    NOTE: Ensure engine coolant temperature is at least 158°F (70°C) before performing CKP sensor variation learn procedure.
  4. Ensure ignition is off. Apply parking brake. Block front wheels. Start engine and warm engine until engine coolant temperature is at least 158°F (70°C). Turn ignition off.
  5. Using scan tool, select and enable CKP sensor variation learn procedure. Follow instructions displayed on scan tool.
  6. If CKP sensor variation learn procedure was not terminated, go to next step. If CKP sensor variation learn procedure was terminated, this may be caused by PCM detecting a problem in cam signal causing DTC P0341, 3X crank signal causing DTC P1374 3X or 24X crank signal causing DTC P0336 24X. Using scan tool, check for stored DTCs. Perform test procedures for specified DTCs and repair as necessary. See the appropriate TESTS W/CODES article in ENGINE PERFORMANCE.
  7. Check scan tool for status of DTC P1336. If scan tool indicates DTC P1336 ran and passed, CKP sensor variation learn procedure is complete. If scan tool indicates DTC P1336 failed or was not run, check for any other DTCs. See the appropriate TESTS W/CODES article in ENGINE PERFORMANCE. If any other DTCs exist, perform test procedures for specified DTC and repair as necessary. If no other DTCs exist, repeat CKP sensor variation learn procedure.
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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.