P1194 – Land Rover DTC

Land Rover DTC P1194 – Oxygen Sensor Heater High Resistance Downstream

DTC P1194 meaning on Land Rover

Diagnostic Trouble Code (DTC) P1194 on a Land Rover indicates an issue with the downstream oxygen sensor heater circuit having high resistance. The oxygen sensor is responsible for monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module for proper air-fuel ratio adjustments.

Land Rover DTC P1194 symptoms

Symptoms of DTC P1194 on a Land Rover may include:

• Check Engine Light illuminated on the dashboard
• Decreased fuel efficiency
• Engine running rough or misfiring

Land Rover DTC P1194 causes

Common causes of DTC P1194 on a Land Rover include:

• Faulty downstream oxygen sensor
• Wiring or connector issues in the oxygen sensor heater circuit
• Internal ECM (Engine Control Module) fault

Land Rover DTC P1194 seriousness

DTC P1194 should not be ignored as it can lead to poor engine performance and increased emissions. It is important to address this issue promptly to prevent further damage to the vehicle’s components.

How to diagnose DTC P1194 on Land Rover

To diagnose DTC P1194 on a Land Rover, follow these steps:

1. Use an OBD-II scanner to retrieve the fault code and verify the code P1194.
2. Inspect the downstream oxygen sensor and its wiring for any visible damage or corrosion.
3. Check the resistance of the oxygen sensor heater circuit using a multimeter to determine if it is within specifications.
4. If necessary, perform a continuity test on the wiring to identify any open circuits or shorts.

How to fix DTC P1194 on Land Rover

To fix DTC P1194 on a Land Rover, consider the following steps:

1. Replace the downstream oxygen sensor if it is found to be faulty.
2. Repair or replace any damaged wiring or connectors in the oxygen sensor heater circuit.
3. If the issue persists, consult a professional mechanic to diagnose any potential ECM faults.

How to erase DTC P1194 on Land Rover

To erase DTC P1194 on a Land Rover, follow these steps:

1. Use an OBD-II scanner to clear the fault code from the ECM memory.
2. After clearing the code, start the vehicle and ensure the Check Engine Light does not reappear.
3. If the light returns, further diagnosis may be required to address any underlying issues.

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