1999 Jeep CJ7 COMPUTER CODES

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

THANKS.
Monday, January 7th, 2008 AT 7:54 PM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 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.
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Monday, January 7th, 2008 AT 8:05 PM

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