Code result
P22F1
Particulate Matter Sensor Heater Performance
High severity
What it means
The particulate matter (PM) sensor heater on diesel after-DPF systems does not reach or hold the calibrated operating temperature within the expected time. Without proper heating the PM sensor cannot be regenerated and read correctly.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
PM sensor aging
highOne of the most commonly reported causes for this code — check this first.
Increased heater resistance
mediumA plausible cause — test and verify before replacing parts.
Related help
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