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Discussion Starter #1
Hey everyone. I decided to start a thread on what DTC'S everyone has had and what finally was the problem that cleared it up. I know that some codes could have multiple solutions so this might make it easier for some of us to diagnose and repair our jeeps.

I had the code p-0420 catalyst efficiency below normal and I ended up having to have the cat replaced. Luckily it was still under warranty until 80,000 miles. Stealership said it would have cost $1300.
 

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Great Idea

I've got an code B1647. That's the easy part. Now who know how to fix it? It's low voltage to the right rear turn/brake light. I can get the rear light to flash 4 times before it starts flashing quickly in the dash with no light from the bulb.
 

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Discussion Starter #3
Found this but I don't know if it will help.

B1647-REAR RIGHT TURN LAMP CONTROL CIRCUIT LOW

When Monitored:

With the Turn Signal activated.

Set Condition:

When the Totally Integrated Power Module (TIPM) detects a LOW condition.

Possible Causes (L62) RIGHT REAR TURN SIGNAL CONTROL CIRCUIT SHORT TO GROUND RIGHT REAR TURN SIGNAL BULB TOTALLY INTEGRATED POWER MODULE Diagnostic Test1. INTERMITTENT CONDITION

Turn the ignition on.

With the scan tool, clear all DTC's.

Turn the Right Turn Signal on.

With the scan tool, read DTC's.

Does the scan tool display active: B1647-REAR RIGHT TURN LAMP CONTROL CIRCUIT LOW?YesGo To 2

NoThe condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced,
pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.

Perform the BODY VERIFICATION TEST-VER1.

(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

2. REAR RIGHT TURN SIGNAL BULB

Turn the ignition off.

Disconnect the Right Rear Turn Signal Bulb.

Turn the ignition on.

With the scan tool, read DTC's.

Does the DTC reset?YesGo To 3

NoReplace the Right Rear Turn Signal Bulb in accordance with the Service Information.

Perform the BODY VERIFICATION TEST - VER 1.

(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

3. (L62) RIGHT REAR TURN SIGNAL CONTROL CIRCUIT SHORT TO GROUND

Turn the ignition off.

Disconnect the TIPM C4 harness connector.

Disconnect the Right Rear Tail Lamp harness connector.

Measure the resistance between ground and the (L62) Right Rear Turn Signal Control circuit.

Is the resistance above 10k ohms?YesReplace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.

Perform the BODY VERIFICATION TEST-VER1.

(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

NoRepair the (L62) Right Rear Turn Signal Control circuit for a short to ground.

Perform the BODY VERIFICATION TEST-VER1.

(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
 

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P 0440 - EVAP

Just had a new clutch installed and less than 50 miles in, I'm getting a CEL and it threw the first code ever. Gonna be heading over to the shop that did the work and letting them handle it. I'll post back with the solution.
 
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