Fault code P0095 – a step-by-step guide to diagnosing and fixing it

Error code P0095 is displayed and the check engine light is on - what does this mean?

The OBD/EOBD system has detected a fault in the intake air temperature sensor circuit. This DTC P0095 indicates a problem with the sensor that measures the temperature of the intake air. For various manufacturers, the code may also be referred to as "Intake Air Temperature Sensor Circuit Malfunction".

What causes can this error code have?

• Defective intake air temperature sensor (IAT sensor)
• Damaged or corroded cable connections to the sensor
• Loose or defective plug connections
• Short circuit in the wiring of the sensor system
• Interruption in the circuit of the IAT sensor
• Defective engine control unit (ECU)
• Dirty or clogged air filter
• Problems with the ground connection of the sensor

What symptoms occur in parallel with fault code P0095?

• Check engine light: The check engine light is permanently illuminated
• Starting problems: Difficult starting when the engine is cold
• Uneven idling: Engine runs unevenly at idle speed
• Loss of power: Reduced engine power, especially when starting cold
• Increased fuel consumption: Poorer fuel efficiency due to incorrect air temperature values
• Jerking: Engine jerks while driving or accelerating

How to fix the problem of error code P0095?

• The repair requires a systematic diagnosis of the intake air temperature sensor and its components.
• Replace the sensor: Replace the defective IAT sensor completely, as this is the most common cause of fault code P0095
• Check and repair cable connections: Inspect all cables to the sensor for damage and replace or repair defective cables
• Clean plug connections: Remove corrosion from the plug contacts on the sensor and wiring harness and treat with contact spray
• Change the air filter: Install a new air filter to ensure optimum air supply and correct temperature measurement
• Check the earth connection: Check the ground connection of the sensor and make a new ground connection if necessary
• Diagnose engine control unit: If problems persist, check the ECU for defects and have it replaced if necessary