P1136 — Long-Term Fuel Trim Add. Fuel, Bank 1 System Too Lean
CAUTIONIs it safe to drive? Drive gently and get it looked at soon — it can worsen or fail inspection.
What P1136 means
This is a manufacturer-specific code — its meaning depends on the vehicle’s make (see below).
What P1136 means on specific makes
VW / Audi CAUTION
VW/Audi P1-code for a lean long-term fuel-trim adaptation on bank 1 — the ECM is adding the maximum extra fuel. On VAG this is the classic vacuum-leak/PCV code (akin to BMW's lean codes). Commonly searched on 1.8T/2.0.
- PCV / crankcase breather system leak (very common) ($50-200)
- Intake/vacuum leak, intake boot or gaskets ($30-150)
- Dirty/failing MAF ($120-300)
- Weak fuel delivery
Check first: Smoke-test the intake and PCV. High positive fuel trims confirm unmetered air. On 1.8T inspect the brittle PCV/breather hoses.
Source: Bentley VW/Audi DTC table; VAG forum lean-trim threads