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P1164 fault code: what it means

P1164: Honda A/F sensor (sensor 1) circuit range/performance problem. Usually the sensor.

Engine and gearbox (powertrain) · Minor

Usual causes, most likely first

  1. A/F sensor
  2. wiring fault
  3. exhaust leak

P1164 by make

Honda

Honda A/F sensor (sensor 1) circuit range/performance problem. Usually the sensor.

Usual causes: A/F sensor; wiring fault; exhaust leak

Land Rover

Right bank mixture adaptation per ignition too large (running lean).

Usual causes: vacuum leak; weak fuel pump; faulty MAF

Not sure what P1164 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.