P0132: O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
Can you still drive? Yes, but the engine is running rich which wastes fuel and can damage the catalytic converter over time. Repair within a week or two.
What Does P0132 Mean?
Code P0132 indicates that the upstream oxygen sensor on Bank 1 is stuck reading a high voltage, which tells the ECU the exhaust is consistently rich. This prevents proper fuel trim correction and can lead to increased fuel consumption and elevated emissions. The sensor may have failed or there may be an actual rich running condition.
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Browse OBD-II Scanners on AmazonCommon Causes
- Faulty O2 sensor stuck reading rich
- Short in O2 sensor signal wire
- Fuel system running excessively rich
- Leaking fuel injector
Symptoms
- Check engine light on
- Rich running condition
- Black exhaust smoke
- Poor fuel economy
- Strong fuel smell from exhaust
Diagnostic Steps
- 1Read and document freeze frame data
- 2Monitor O2 sensor voltage with a scan tool to confirm it stays above 0.9V
- 3Check fuel trims for rich condition
- 4Inspect O2 sensor wiring for shorts
- 5Check fuel pressure and injector operation
- 6Replace O2 sensor if the sensor is confirmed faulty
Recommended Parts & Tools
oxygen sensor
O2 sensor socket
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $50 - $350 |
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Chat with AI About P0132Commonly Affected Vehicles
Related Recalls
6 Active Recalls — 2026 Ford Explorer
The following NHTSA safety recalls have been issued for this vehicle. Contact your dealer to check if your vehicle is affected.
VISIBILITY:WINDSHIELD
Ford Motor Company (Ford) is recalling certain 2025-2026 Lincoln Corsair, Lincoln Aviator, and Explorer vehicles. The windshield glass may have visible air bubbles, which can obscure the driver's visibility. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 205, "Glazing Materials."
Remedy: Dealers will inspect and replace the windshield as necessary, free of charge. Owner notification letters were mailed November 6, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25C60. Vehicle Identification Numbers (VINs) involved in this recall become searchable on NHTSA.gov beginning October 27, 2025.
ENGINE
Ford Motor Company (Ford) is recalling certain 2026 Explorer, Mustang, Lincoln Corsair, and 2025 Maverick vehicles. The cylinder head may have been improperly manufactured, which can cause the ball plugs to fail, resulting in an oil leak.
Remedy: Dealers will replace the cylinder head assembly, free of charge. All affected vehicles are still within dealership inventory and therefore no owner notification letters will be mailed. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25SD3. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on November 24, 2025.
TRAILER HITCHES
Ford Motor Company (Ford) is recalling certain 2024-2026 Explorer and 2024-2026 Lincoln Aviator vehicles. The trailer hitch assembly bolts may be loose.
Remedy: Dealers will inspect and tighten the trailer hitch bolts, or replace them as necessary, free of charge. Owner notification letters were mailed October 29, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25SA3. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on October 15, 2025.
VISIBILITY:WINDSHIELD
Ford Motor Company (Ford) is recalling certain 2026 Explorer vehicles. During manufacturing, the windshield may not have been properly bonded to the vehicle, allowing it to detach in a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 212, "Windshield Mounting."
Remedy: Dealers will remove and replace the windshield, free charge. Owner notification letters were mailed January 30, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26C02. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on January 22, 2026.
EXTERIOR LIGHTING:HEADLIGHTS
Ford Motor Company (Ford) is recalling certain 2025-2026 Explorer vehicles. The Dynamic Bending Light (DBL) system software may cause the passenger-side headlight to turn in the wrong direction when driving through curves in the road. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, " Lamps, Reflective Devices, and Associated Equipment."
Remedy: The headlight control module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters are expected to be mailed March 23, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26C12. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on March 5, 2026.
+ 1 more recall. Visit NHTSA.gov for full details.
Data provided by the National Highway Traffic Safety Administration (NHTSA).
Frequently Asked Questions
What does high voltage mean for an O2 sensor?
A high voltage reading (above 0.9V) from an O2 sensor indicates a rich exhaust condition, meaning too much fuel and not enough oxygen in the exhaust. The sensor may be stuck or the engine may actually be running rich.
Can a rich running engine damage other parts?
Yes, a consistently rich engine can damage the catalytic converter by overheating it, and can foul spark plugs, leading to misfires and additional repair costs.
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