DTC P2237:00, P2240:00: Notes
WARNING: This page is about a different variant/trim than selected.
| DTC P2237:00 |
P2237:00: A/F sensor (RH) positive current control circuit/open |
| DTC P2240:00 |
P2240:00: A/F sensor (LH) positive current control circuit/open |
| DETECTION CONDITION |
- P2237:00 indicates that A/F sensor (RH) positive current control circuit/open
- P2240:00 indicates that A/F sensor (LH) positive current control circuit/open
- The powertrain control module (PCM) monitors the universal heated oxygen sensor (HO2S) for a circuit concern. This DTC sets when the PCM detects a concern with the circuit used to determine the oxygen content in the exhaust gas.
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| POSSIBLE CAUSE |
- A/F sensor connector or terminals malfunction
- Open circuit in wiring harness between the following terminals:
- A/F sensor (RH) terminal G-PCM terminal 2AS
- A/F sensor (LH) terminal G-PCM terminal 2AO
- Damaged A/F sensor
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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