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P1137 fault code: what it means

P1137: Older VW code: fuel trim rich at idle (additive), bank 1. Higher fuel use and possible black smoke or fuel smell.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. leaking injector
  2. faulty fuel pressure regulator
  3. EVAP purge valve stuck open
  4. faulty MAF sensor

P1137 by make

Audi

Older VW code: fuel trim rich at idle (additive), bank 1. Higher fuel use and possible black smoke or fuel smell.

Usual causes: leaking injector; faulty fuel pressure regulator; EVAP purge valve stuck open; faulty MAF sensor

Skoda

Older VW code: fuel trim rich at idle (additive), bank 1. Higher fuel use and possible black smoke or fuel smell.

Usual causes: leaking injector; faulty fuel pressure regulator; EVAP purge valve stuck open; faulty MAF sensor

Volkswagen

Older VW code: fuel trim rich at idle (additive), bank 1. Higher fuel use and possible black smoke or fuel smell.

Usual causes: leaking injector; faulty fuel pressure regulator; EVAP purge valve stuck open; faulty MAF sensor

What the repair usually costs

Not sure what P1137 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.