Meaning of Code P1175
The engine control module (ECM) adjusts values to control certain functions, ensuring compliance with anti-pollution standards and optimizing engine performance.
Components affected by these adaptations:
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APP sensor (Accelerator Pedal Position Sensor).
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HO2S sensor (Heated Oxygen Sensor).
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MAF/IAT sensor (Mass Air Flow/Intake Air Temperature Sensor).
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CKP sensor (Crankshaft Position Sensor).
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Electronic throttle body.
Possible Symptoms
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🔧 Engine light on (or preventive warning message).
Probable Causes
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Failure of the heated oxygen sensor (HO2S).
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Electrical problem:
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HO2S sensor wiring open or short-circuited.
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Faulty electrical connection (corroded, bent, broken, or improperly engaged pins).
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Repair Method
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Visual inspection:
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Check the HO2S wiring and connectors.
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Look for damaged wires, melted insulation, or signs of corrosion.
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Connection check:
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Examine connector pins (ensure they are not oxidized, bent, or broken).
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Clean connectors with an appropriate product if necessary.
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HO2S sensor test:
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Use a multimeter to measure sensor resistance and voltage (refer to manufacturer technical specifications).
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Replace the sensor if abnormalities are detected.
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ECM reset:
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Clear the P1175 code with a diagnostic tool after repairs.
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Check if the code reappears after a driving cycle.
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Additional Tips
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If the problem persists, inspect the HO2S heater circuit (fuse, relay).
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Consult real-time data via a diagnostic tool to identify anomalies during engine operation.
⚠️ If you are not comfortable with these steps, consult a certified LAND-ROVER mechanic.