Powertrain, generic · Ignition system or misfire

P033F Crankshaft/Camshaft Loss Of Synchronization

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

To know which stroke each cylinder is in, the engine module matches the crank angle with the camshaft phase. P033F means this synchronisation is lost while running or cannot be established. It is documented by code only at Ford (2020–2023): P033F, as an alternative to Ford's older own code, stands for a disturbed crank signal without crank/cam synchronisation, and then misfire detection is also impossible. Ford's 2012 description shows the reaction: on a crank sensor fault the module cuts fuel and spark and resynchronises – one revolution to find the gap, one more to confirm cylinder 1 via the camshaft sensor. FCA evaluates the same function in its own cam/crank synchronisation monitor under other codes. Besides the sensors, a jumped timing chain or belt can be behind it.

Likely causes

Noisy or disturbed crankshaft signal (sensor, air gap, interference)
Disturbed camshaft signal
Timing chain or belt jumped or heavily stretched
Wiring or connector
Tone wheel damaged or loose

Symptoms

  • Jerking, brief loss of power
  • Engine stalls, hard starting
  • Misfire detection inactive
  • Check engine light on

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–1,500
Time0.5–8 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

crankshaft position sensorcamshaft position sensortiming chainsensor wiring

Related codes

P0335P0336P0340P0016P0300

References: fordservicecontent.com, newtonnet.co.uk, static.nhtsa.gov, law.cornell.edu.