The Buick fault code P2432 indicates an issue with the AIR Pressure Sensor circuit.
Symptoms include the Engine Light being ON.
This code is commonly caused by a faulty AIR Pressure Sensor or related wiring issues.
It’s important to address this problem promptly to prevent potential damage to the vehicle.
A possible fix is to inspect the sensor, wiring harness, and connectors for any damage or poor connections.
Repair Importance Level | 10.0 (Out of 10) |
Estimated Repair Time | Approximately 1.0 hour |
Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the Buick p2432 OBD Code
The vehicle may exhibit a rough idle or lack of power under acceleration with fault code P2432.
- Symptoms: Service Engine Soon Warning Light ON.
- Reduced engine power message on the driver information center.
- Rough engine idle.
- Engine may stall at idle or while driving.
- Whining noise from the secondary air injection pump.
Causes of the Buick p2432 OBD Code
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Possible reasons for Buick fault code P2432 include a faulty air injection pump pressure sensor circuit.
- P2432 can be caused by a faulty AIR Pressure Sensor.
- An open or shorted AIR Pressure Sensor harness.
- A poor electrical connection in the AIR Pressure Sensor circuit.
Fixing Buick Error Code p2432 Step By Step
Replace faulty secondary air injection pump pressure sensor circuit in Buick with fault code P2432.
- To fix P2432, first, review the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the secondary air injection system.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no visible issues are found, proceed to test the secondary air injection pump for proper operation.
- Replace the secondary air injection pump if it is faulty.
- Clear the fault codes from the vehicle’s engine control module.
- Finally, perform a test drive to ensure the issue is resolved.
Cost Of Fixing Buick p2432 Fault Code
Diagnosing and repairing fault code P2432 on a Buick may involve replacing the secondary air injection system pressure sensor.
The cost to diagnose and fix the Buick P2432 error depends on the estimated repair time of 1. 0 hour.
Most shops charge between $75 and $150 per hour for labor rates.
The total cost will vary based on shop rates, complexity of the issue, and any additional parts or services needed.
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Details of the Buick p2432 OBD Code
Fault code P2432 in a Buick indicates a problem with the secondary air injection system pressure sensor circuit.
Code P2432 for a Buick indicates an issue with the Secondary Air Injection System Air Flow/Pressure Sensor Circuit Low.
This code is triggered by the Engine Control Module (ECM) when it detects a lower than expected voltage signal from the secondary air injection system sensor.
The secondary air injection system helps reduce emissions during cold engine starts by injecting fresh air into the exhaust system.
The sensor monitors the air flow or pressure within the system to ensure proper operation.
A low voltage signal can be caused by a faulty sensor, wiring issues, or a problem with the ECM itself.
Mechanic’s Tech Notes for Buick Error Code p2432
Detailed information on diagnosing and repairing fault code P2432 in a Buick vehicle.
Fault code P2432 in a Buick typically indicates an issue with the secondary air injection system air flow/pressure sensor circuit.
To diagnose this code effectively, you can start by visually inspecting the wiring harness and connectors related to the sensor.
Look for any signs of damage, corrosion, or loose connections.
Next, you can use a multimeter to check the voltage at the sensor connector.
Ensure that the sensor is receiving the correct voltage according to the manufacturer’s specifications.
If the voltage is incorrect, it could point to a wiring issue or a faulty sensor.
Additionally, using a scan tool, you can monitor the sensor’s data while the vehicle is running.
This can help you determine if the sensor is functioning properly and sending the correct signals to the engine control module.
If all the above checks out, you may need to inspect the sensor itself for any physical damage or internal faults.
If necessary, replacing the sensor might be the solution to clear the fault code P2432 in your Buick.
FAQ
Common symptoms for fault code P2432 in a Buick include the Engine Light ON. Causes may be a faulty AIR Pressure Sensor or related wiring issues.
Fault code P2432 in a Buick is typically caused by a faulty AIR Pressure Sensor, open/shorted harness, or poor electrical connection. Inspect and repair wiring/connectors.
Diagnose and repair P2432 in your Buick by checking the AIR Pressure Sensor and its wiring for faults. Inspect connectors for damage or corrosion.

Wrap Up
If your Buick triggers code P2432, you may experience rough engine idling, reduced engine power, or even stalling.
This code typically indicates an issue with the secondary air injection system, possibly caused by a faulty air pump, damaged wiring, or a failed air pump relay.
To address P2432, start by inspecting the secondary air injection pump, checking the wiring harness for any signs of damage, and testing the air pump relay for proper operation.
Replace any faulty components and ensure all connections are secure to resolve the problem effectively.