2005 Jeep TJ Wrangler P0016 Fault Code: Limp Mode and Sputtering at 2800-3000 RPM
I own a 2005 Jeep TJ Wrangler with a recurring issue involving the P0016 diagnostic trouble code. The vehicle enters limp mode, and recently began sputtering specifically between 2800 and 3000 RPM. I replaced both the crankshaft position sensor (CKP) and camshaft position sensor (CMP), which initially resolved the issue for a few weeks. However, the check engine light has returned, and the symptoms persist. After extensive research on Jeep forums and online resources, no consistent solution has been found. I am seeking expert advice—particularly regarding potential causes related to the P0016 code in a 4.0L or 2.4L engine configuration. Any guidance on further diagnostics or troubleshooting steps would be greatly appreciated.
I suspect this is a 4.0L engine based on the P0016 code context. Could you confirm your engine size? Please note that using an OBD2 scanner to retrieve live data and check for additional fault codes is essential. Do you currently have access to a scan tool? If so, sharing real-time sensor readings (like crankshaft position or camshaft timing) could help pinpoint the issue more accurately. Also, were both the CKP and CMP sensors replaced—what was the reason behind that decision? Confirming whether it's a 4.0L or 2.4L engine will provide better direction for troubleshooting.