P0132 – OBD-II DTC

OBD-II DTC P0132 – O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)

DTC P0132 meaning

DTC P0132 indicates a problem with the oxygen sensor circuit for Bank 1 Sensor 1. This code specifically means that the voltage signal from the oxygen sensor is lower than expected, which can affect the engine’s air-fuel mixture and overall performance.

DTC P0132 symptoms

Common symptoms associated with DTC P0132 include:

• Check Engine Light illuminated
• Poor fuel economy
• Rough idling or stalling
• Increased emissions
• Loss of power during acceleration

DTC P0132 causes

Several factors can lead to the triggering of DTC P0132, including:

• Faulty oxygen sensor
• Wiring issues or damaged connectors in the O2 sensor circuit
• Exhaust leaks near the sensor
• Faulty engine control module (ECM)
• Contaminated or damaged sensor due to oil or coolant leaks

DTC P0132 seriousness

DTC P0132 is considered a moderate to serious issue. If left unaddressed, it can lead to:

• Increased fuel consumption
• Potential damage to the catalytic converter
• Failing emissions tests
• Overall poor engine performance

How to diagnose DTC P0132

To diagnose DTC P0132, 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 any visible damage or corrosion.
3. Check the voltage output of the oxygen sensor using a multimeter.
4. Test the sensor’s ground connection and ensure it is secure.
5. Look for exhaust leaks that may affect sensor readings.
6. Evaluate the engine’s performance and fuel trim data for abnormalities.

How to fix DTC P0132 step-by-step instructions

To fix DTC P0132, follow these steps:

1. Clear the DTC using an OBD-II scanner.
2. Replace the faulty oxygen sensor if testing indicates it is defective.
3. Repair or replace any damaged wiring or connectors in the O2 sensor circuit.
4. Fix any exhaust leaks that may be present.
5. Recheck the voltage output of the new or repaired sensor.
6. Test drive the vehicle to ensure the issue is resolved and the Check Engine Light does not reappear.

How to erase DTC P0132

To erase DTC P0132, 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 DTCs” option on the scanner.
4. Confirm the action to clear the codes.
5. Disconnect the scanner and start the engine to verify that the Check Engine Light is off.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

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

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.