Went to start the engine to go to dinner and the MIL was on again and the same codes were set. It showed 4 codes actually. P200A, P200B, P200A Pending, P200B Pending. I cleared the codes and called my SA to tell him I was bringing it back Tuesday. The trucks seems to run fine. What is the Cost to Diagnose the Code P1128 Jeep? Labor: 1.0. The cost to diagnose the P1128 Jeep code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour. straty1987. 2470 posts · Joined 2008. #5 · Nov 1, 2010. 52 = AI (Recirc) door travel range too large. 54 = Left temperature door travel too large. 56 = Right temperature door travel too large. 54 and 56 is the broken blend door. there is a simple fix that you can make a hole behind the glove box and change teh broken parts in under an hour. Step 2 – Plug the device into the OBD port. Locate the OBD port under the dash on the driver's side of your Jeep, and plug in the device. Once you do so, you should see some diagnostic lights come on as the device starts to communicate with the vehicle. Figure 2. Plug in the OBD adapter. You may need assistance from the mechanic to remove the catalytic converter, which can charge you around $75-$100 for an hour of service. 6. Replace Catalytic Converter. Finally; the faulty catalytic converter is the worst-case scenario and most common cause for the P0420 code on a Jeep. As a result, the check engine light turns on and shows the P0441 trouble code in the OBD II scanner. Replacing or just tightening the gas cap can easily fix the problem. So, it is a good idea to start with this simple fix. Check the gas cap condition first. Clean with the WD 40 cleaner. The 2002 Jeep Grand Cherokee is one of the most powerful off-road SUVs. It performs well on paved, unpaved, and snowy roads. Reviews given by owners of the 2002 Jeep grand Cherokee claim that the powerful engine makes it perform better on all types of roads. However, most reviews also indicated one common problem with the 2002 Jeep Grand Cherokee. The Jeep Grand Cherokee High-Temperature Warning Light is a dashboard symbol that indicates when the engine coolant temperature is too high. If this light comes on, pulling over and turning off the engine immediately is essential. Once the engine has cooled down, check the coolant level and add more if needed. MIL on, no noticeable driveability problems. May have code P0121 - TPS voltage does not agree with MAP. Possible codes P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208. The PCM software falsely sets injector circuit codes when there is really no problem with the injectors. 8yEgW.

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