DTC P0135:00, P0155:00: Notes
WARNING: This page is about a different variant/trim than selected.
| DTC P0135:00 |
P0135:00: A/F sensor (RH) heater circuit |
| DTC P0155:00 |
P0155:00: A/F sensor (LH) heater circuit |
| DETECTION CONDITION |
- P0135:00 indicates A/F sensor (RH) heater circuit.
- P0155:00 indicates A/F sensor (LH) heater circuit.
- During testing the A/F sensor heaters are checked for open and short circuits and excessive current draw. The test fails when the current draw exceeds the calibrated limit or an open or short circuit is detected.
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| POSSIBLE CAUSE |
- Open circuit between main relay terminal A and A/F sensor (RH/LH) terminal C
- Damaged ENGINE fuse
- Short to ground between A/F sensor (RH/LH) terminal C and ENGINE fuse
- P0135:00: Open circuit between PCM terminal 2J and A/F sensor (RH) terminal E
- P0155:00: Open circuit between PCM terminal 2E and A/F sensor (LH) terminal E
- P0135:00: Short to ground between PCM terminal 2J and A/F sensor (RH) terminal E
- P0155:00: Short to ground between PCM terminal 2E and A/F sensor (LH) terminal E
- P0135:00: Short to power supply between PCM terminal 2J and A/F sensor (RH) terminal E
- P0155:00: Short to power supply between PCM terminal 2E and A/F sensor (LH) terminal E
- A/F sensor heater control signal circuit short to each other
- A/F sensor heater malfunction
- Water in the wiring harness connector
- Low battery voltage
- Corrosion or incorrect wiring harness connections
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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