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Ron, ASE Certified Technician
Category: Jeep
Satisfied Customers: 35858
Experience:  34 year working in the automotive field as a Tech.
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I am getting multiple codes on a 1999 Jeep Grand Cherokee

Customer Question

Customer: Doug, and I am getting multiple codes on a 1999 Jeep Grand Cherokee 4.0
JA: Thanks. Can you give me any more details about your issue?
Customer: I am reading p0031, p0051, p0136 p0152, p0132 Fuse 16 was blown
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Submitted: 1 year ago.
Category: Jeep
Expert:  Ron replied 1 year ago.

Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.

All the codes you have listed indicate a problem with the power feed to the HO2S sensors and or the circuit to them. Since the #16 fuse was blown then that would indicate a short with either the HO2S and or the circuit to one of them. Start with unplugging all of the HO2S sensor and see if the fuse holds, if it dose then plug them in one at a time to see if the fuse blows. If so then suspect a shorted HO2S sensor on which ever one cause the fuse to blow.