1999 Jeep CJ7 COMPUTER CODES

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

THANKS.
Jan 7, 2008 at 7:54 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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BLACKOP555
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 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
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