2008 Dodge Ram 1500 P0335 Crankshaft Position Sensor Code: Diagnosis and Fixes

What was the exact code for the ETC system? Code: P0335 — Crankshaft Position Sensor Circuit A Key term: CIRCUIT. Did you inspect the wiring harness connected to the CKP sensor? Relevant circuit: F855 (5-volt supply circuit) and K24 (CKP signal circuit). Possible Causes: - F855: 5-volt supply circuit shorted to voltage or open - F855: 5-volt supply circuit grounded - K24: CKP signal circuit open, shorted to voltage, shorted to ground, or shorted to the F855 5-volt supply - K900: Sensor ground circuit open Note: The crankshaft position sensor is a common component, but wiring faults and grounding issues are frequent root causes. Also verify if the camshaft position sensor could be interfering.

Thanks — I'll inspect the wiring connections tonight. A friend also suggested that a timing chain issue might be contributing to this problem, especially since the engine is having difficulty starting and showing limp mode behavior.

The ETC light being on combined with limp mode and the P0335 code indicates the engine control system is detecting a critical issue with crankshaft position, likely affecting ignition timing and fuel delivery. This could point to either sensor failure or mechanical issues like a worn timing chain.

A generic OBD-II scanner may not detect all stored fault codes or manufacturer-specific diagnostics. For more accurate readings, consider using advanced tools such as the Autel MaxiSys MD805, which can access deeper module data and provide better insights into engine performance issues.