1999 Jeep CJ7 COMPUTER CODES

1999 JEEP CJ7
279,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
MAYAN-TJ
  • MEMBER
  • 1 POST
HOW CAN I REPAIR THESE CODES
P0118
P0138

THANKS.
Jan 7, 2008 at 7:54 PM
Advertisement
Avatar
BLACKOP555
  • CERTIFIED EXPERT
  • 10,386 POSTS
P0118 is coolant temperature circuit high input, to fix this check the wires going to the coolant sensor and to the wiring harness.

P0138 - Left Bank Downstream or Downstream and Pre-Catalyst o2 Shorted to Voltage low. that is caused bye a bad catalytic converter or a bad pre and after o2 sensor may also be caused due to the P0118 code.
Jan 7, 2008 at 8:05 PM