Holden
GM code: intake air flow system performance. On Cruze/Barina 1.6/1.8 a split PCV diaphragm in the cam cover is a known cause: rough idle, sluggish, harsh low-gear shifts.
P1101 fault code: what it means
P1101: GM code: intake air flow system performance. On Cruze/Barina 1.6/1.8 a split PCV diaphragm in the cam cover is a known cause: rough idle, sluggish, harsh low-gear shifts.
Usual causes, most likely first
- ruptured PCV diaphragm in camshaft cover
- intake leak after MAF
- dirty MAF or MAP sensor
P1101 by make
What the repair usually costs
- Throttle body clean and idle relearnNZ$90–NZ$190 · A$100–A$200
- Petrol fuel injectors (port injection, set)NZ$430–NZ$1,420 · A$400–A$1,360
- Coil packs and spark plugs (4-cylinder)NZ$280–NZ$1,000 · A$260–A$920
- EGR valve replacement or cleanNZ$350–NZ$1,710 · A$330–A$1,630
Not sure what P1101 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.