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Engine-Codes.com | All About OBDII Engine Codes

P2270 Ford

P2270 Ford - Lack HO2S Switches Sensor Indicates Lean

P2270 Ford Comments |  Add Comment
Possible causes
- Faulty O2 Sensor Bank 1 Sensor 2
- O2 Sensor Bank 1 Sensor 2 harness is open or shorted
- O2 Sensor Bank 1 Sensor 2 circuit poor electrical connection
- Air leak near oxygen sensor
Help with Possible causes What does this mean?
When is the code detected?
The test fails if the Powertrain Control Module (PCM) does not detect the output of the Heated Oxygen Sensor (HO2S) in a calibrated amount of time.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2270 Ford Description

The downstream Heated Oxygen Sensor (HO2S) is forced rich and lean and monitored by the Powertrain Control Module (PCM).

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