P0153 – OBD-II DTC

OBD-II DTC P0153 – O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)

DTC P0153 meaning

DTC P0153 refers to a diagnostic trouble code indicating a high voltage condition in the oxygen sensor circuit for Bank 2 Sensor 1. This sensor is responsible for monitoring the oxygen levels in the exhaust gases, which helps the engine control module (ECM) adjust the air-fuel mixture for optimal combustion. A high voltage reading suggests that the sensor is detecting an excessive amount of oxygen or that there is a fault in the sensor circuit.

DTC P0153 symptoms

Common symptoms associated with DTC P0153 may include:

• Check Engine Light illuminated
• Poor fuel economy
• Rough engine idle
• Increased emissions
• Loss of engine power or acceleration

DTC P0153 causes

Several factors can lead to the occurrence of DTC P0153, including:

• Faulty oxygen sensor
• Wiring issues, such as shorts or open circuits
• Corroded or damaged connectors
• Exhaust leaks near the sensor
• ECM malfunction

DTC P0153 seriousness

DTC P0153 is considered a moderate to serious issue. While it may not cause immediate engine failure, it can lead to:

• Increased fuel consumption
• Higher emissions, potentially failing emissions tests
• Long-term engine damage if not addressed

How to diagnose DTC P0153

To diagnose DTC P0153, follow these steps:

1. Use an OBD-II scanner to confirm the code and check for any additional codes.
2. Inspect the oxygen sensor and its wiring for visible damage or corrosion.
3. Test the voltage output of the oxygen sensor using a multimeter.
4. Check for exhaust leaks near the sensor.
5. Examine the ECM for any faults or updates.

How to fix DTC P0153 step-by-step instructions

To fix DTC P0153, follow these steps:

1. Disconnect the battery to ensure safety.
2. Inspect and repair any damaged wiring or connectors related to the oxygen sensor.
3. If the oxygen sensor is faulty, replace it with a new one.
4. Check for and repair any exhaust leaks near the sensor.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test drive the vehicle to ensure the code does not return.

How to erase DTC P0153

To erase DTC P0153, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear Codes” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the engine to verify that the code does not reappear.