The CPS is positioned so that these teeth/cogs pass very closely to its magnetic end. As the crankshaft rotates, the raised areas pass by the sensor and complete the electromagnetic circuit. When the indentations (between the teeth) pass the CPS, the circuit is briefly interrupted. Since the camshaft rotates very quickly, the process of repeatedly completing and interrupting the circuit occurs in milliseconds. This progression of completing and interrupting the CPS circuit produces a waveform pattern. This pattern is recognized by the PCM as crankshaft position. The CPS and all of the camshaft position sensors function in much the same manner.
When the engine is running, the PCM constantly compares input signals from the crankshaft and the camshafts. If the crankshaft position is not within a specified degree of variation from the camshaft/s, under a given set of circumstances for a set period of time, a P0336 code will be stored and a malfunction indicator lamp may be illuminated.
Typically, when this code is set, the engine will not start. If the engine does start, it will likely run very poorly.
Symptoms of P0336
- Engine no start condition
- Hesitation upon acceleration
- General lack of engine performance
- Diminished fuel efficiency
A diagnostic scanner, a digital volt/ohmmeter (DVOM
), a portable oscilloscope, and access to a reliable vehicle information source such as All Data DIY
will be needed before attempting to diagnose a code P0336.
Begin with a visual inspection of all system related wiring harnesses and connectors. Wiring circuits, electrical sensors, and/or connectors that have been contaminated with engine oil, coolant, or power steering fluid should be your focus. Petroleum based fluids are known to corrode the protective insulation on wiring and lead to shorted or open circuits and possibly a stored P0336.