Code result
P04A6
Exhaust Pressure Control Valve B Position Sensor Circuit
Moderate severity
What it means
A circuit fault is detected on the position sensor of exhaust pressure control valve B. Without valid position feedback the ECU cannot run closed-loop control of the valve and falls back to a default substitute.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Open in sensor signal, supply or ground
highOne of the most commonly reported causes for this code — check this first.
Related help
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