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P0420 and P0430 diagnostic test with CRP919EBT scanner results

See how P0420 and P0430 trouble codes are diagnosed using the CRP919EBT scanner and what the test results reveal. #P0420 ...
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Factory Fixes: Check engine light issue on Jeep Cherokee, Commander

Some 2007-08 Grand Cherokee and Commander SUVs with 5.7-liter engines may turn on the Check Engine light and store trouble code P0420 and/or P0430 in PCM memory. Jeep says the problem typically ...