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sprinkles08, ASE Certified Technician
Category: Jeep
Satisfied Customers: 24512
Experience:  Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist
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Code p888, p836 & p135 hard codes on 2000 Jeep Grand

Customer Question

Customer: code p888, p836 & p135 hard codes on 2000 Jeep Grand Cherokee 4.7
JA: Thanks. Can you give me any more details about your issue?
Customer: Starts & runs but trans. is in limp mode.
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Submitted: 2 years ago.
Category: Jeep
Expert:  sprinkles08 replied 2 years ago.

Hello and welcome to JustAnswer!

P0888 is for the trans relay. P0836 is for the transfer case position sensor, P0135 for the left upstream oxygen sensor.

The P0888 is related to the trans not shifting and could be the relay, a blown fuse, the TCM, or a wiring issue.

Have fuses been checked?

Have you tried swapping the trans relay with another?