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P1131 – Land Rover DTC

Land Rover DTC P1131 – Oxygen Sensor Engine Lean *Codes* A U

DTC P1131 meaning on Land Rover

  1. DTC: Diagnostic Trouble Code
  2. P1131: Oxygen Sensor Engine Lean
  3. Indicates that the oxygen sensor in bank 1, sensor 1, is detecting a lean air-fuel mixture in the exhaust system.

Land Rover DTC P1131 symptoms

  • Check Engine Light (MIL) illuminated on the dashboard
  • Decreased fuel efficiency
  • Rough idling or engine misfires
  • Possible hesitation or lack of power during acceleration

Land Rover DTC P1131 causes

  • Vacuum leaks in the intake system
  • Faulty oxygen sensor (bank 1, sensor 1)
  • Fuel system issues such as a clogged fuel filter or weak fuel pump
  • Exhaust leaks before the oxygen sensor

Land Rover DTC P1131 seriousness

This DTC should not be ignored as it can lead to poor engine performance and potential damage to the catalytic converter over time.

How to diagnose DTC P1131 on Land Rover

  1. Use an OBD-II scanner to retrieve the specific trouble code and freeze frame data.
  2. Inspect the intake system for any vacuum leaks.
  3. Check the oxygen sensor (bank 1, sensor 1) for proper operation.
  4. Examine the fuel system components for any issues.
  5. Inspect the exhaust system for leaks before the oxygen sensor.

How to fix DTC P1131 on Land Rover

  1. Repair any vacuum leaks in the intake system.
  2. Replace the oxygen sensor (bank 1, sensor 1) if faulty.
  3. Address any fuel system problems like a clogged fuel filter or weak fuel pump.
  4. Fix any exhaust leaks before the oxygen sensor.

How to erase DTC P1131 on Land Rover

After fixing the underlying issue causing the DTC P1131, you can use an OBD-II scanner to clear the code and reset the Check Engine Light.

Recommended tools for Land Rover diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

← All Land Rover Diagnostic Trouble Codes

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