GWM
Turbo bypass (blow-off) valve control circuit fault on GWM. Can cause boost loss and hesitation.
P0033 fault code: what it means
P0033: Turbo bypass / wastegate control valve circuit fault. Boost may be too low or too high.
Usual causes, most likely first
- failed bypass or wastegate control solenoid
- wiring or connector fault
- split vacuum hose
P0033 by make
Haval
Turbo bypass (blow-off) valve control circuit fault on Haval. Can cause boost loss and hesitation.
MG
Turbo bypass (blow-off) valve control circuit fault on the MG turbo petrol. Can cause boost loss and hesitation.
What the repair usually costs
- A/C compressor replace incl. drier and flush (European)NZ$1,560–NZ$3,200 · A$1,490–A$3,050
Not sure what P0033 means on your car? Ask Credov.
Before you clear it
Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.
Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.