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Home >> Jeep >> 2004 >> Wrangler SE, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Powertrain Diagnostic Procedures >> DRIVEABILITY - Gas >> DTC P1899: P/N Switch Performance >> Possible Causes

Possible Causes

  1. DRBIII(R) DISPLAYS P/N & D/R NOT IN CORRECT POSITION
  2. TRS T41 SENSE (P/N SENSE) CIRCUIT SHORTED TO GROUND
  3. TRS T41 (P/N SENSE) CIRCUIT OPEN]
  4. TRS (P/N SWITCH)
  5. PCM