P1136 fault code: what it means

P1136: Older VW code: fuel trim lean at idle (additive), bank 1. Usually a vacuum leak; rough idle is common.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

1. vacuum or breather hose leak
2. faulty EVAP purge valve (N80)
3. brake booster hose leak
4. faulty MAF sensor

P1136 by make

What the repair usually costs

• ABS / brake booster actuator replacement (Toyota hybrid)NZ$1,280–NZ$3,430 · A$1,140–A$3,090
• MAF (mass air flow) sensor replaceNZ$170–NZ$660 · A$160–A$600
• 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

Not sure what P1136 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.