The video focuses on the basic Acura-specific diagnostic error code.
Contents:
- Basic DTC analysis according to OBD2 protocol standard.
- Insight into programming
- an explanation of what a bit is and how a byte is formed
- decoding the Error Code to the base programming
- A diagnostically understandable description of the Diagnostic Trouble Code
- Basic error definition
- Possible causes or errors of the car and its parts describing the mentioned error

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Make:
Acura
Code:
P2238
Definition:
Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Circuit Low Voltage
Description:
With engine running the IPB1 input terminal voltage is 1 volts or less for at least 5 seconds after the sensor becomes active and 85 seconds before the sensor becomes active. The execution time is continuous, DTCs P0135, P2195, P2237, P2243, P2245, P2251, P2252, P2627, P2628 are not active. NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.
Cause:
Poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM
"Short" circuit between the PCM and the A/F sensor (Sensor 1)
Faulty A/F sensor (Sensor 1)
PCM needs to be updated with the latest software
Faulty PCM

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