Code result
P033E
Knock/Combustion Vibration Sensor D Circuit Intermittent
High severity
What it means
Knock sensor D signal jumps or drops out intermittently — usually a corroded connector or chafed wire near the cylinder head.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Intermittent connector
highOne of the most commonly reported causes for this code — check this first.
Gateway module routing CAN messages incorrectly
lowLess common, but worth ruling out after the more likely causes.
CAN terminating resistor (120 Ω) drifted out of spec
lowLess common, but worth ruling out after the more likely causes.
Related help
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