P 0420 Cadillac Cts 2004

P 0420 Cadillac Cts 2004. All info i found thant problem in ecu or ecu data mismatch. Visually inspect the related wiring harness and connectors.

What is the upper catilic system effeciency on a dodge neon code p0420 where is this located and ... (Dora Morris)

Check the "Possible Causes" listed above. You would probably love the insane CTS V in your driveway. The manager who drove the car thought it was a.

The manager who drove the car thought it was a.

You would probably love the insane CTS V in your driveway.

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Also, see repair breakdown by problem area and cost. And when I turn the car on. The current generation Cadillac CTS is arguably one the best sedans GM has ever made.