DTC P0152 [MZR-CD (RF Turbo)]

id0102f1817800

DTC P0152 | A/F sensor circuit high input
--- | ---
DETECTION CONDITION | • The PCM monitors the input voltage from the A/F sensor and the A/F sensor output current when the engine is running. If the input voltage is more than 4.4 V, the PCM determines that the A/F sensor circuit voltage is high. Diagnostic support note • The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle. • FREEZE FRAME DATA is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE | • A/F sensor malfunction • Connector or terminal malfunction • Short to power supply in wiring harness between A/F sensor terminal B and PCM terminal 85 • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related Service information availability. • Is any related Service information available? | Yes | Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | VERIFY RELATED PENDING OR STORED DTC • Turn the engine switch off, then to the ON position (Engine off). • Verify the pending code or stored DTCs using the WDS or equivalent. • Are other DTCs present? | Yes | Go to the appropriate DTC troubleshooting procedures. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Go to the next step.
4 | IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA • Is DTC P0132 on FREEZE FRAME DATA? | Yes | Go to the next step.
No | Go to troubleshooting procedures for DTC on FREEZE FRAME DATA. (See DTC TABLE [MZR-CD (RF Turbo)].)
5 | INSPECT A/F SENSOR CONNECTOR FOR POOR CONNECTION • Turn the engine switch off. • Disconnect the A/F sensor connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 9.
No | Go to the next step.
6 | INSPECT A/F SENSOR CIRCUIT FOR SHORT TO POWER SUPPLY • Turn the engine switch to the ON position (Engine off). • Measure the voltage between the A/F sensor terminal B (wiring harness-side) the and body ground. • Is the voltage B+? | Yes | Repair or replace the wiring harness for a possible short to power supply, then go to Step 9.
No | Go to the next step.
7 | INSPECT A/F SENSOR • Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Replace the A/F sensor, then go to Step 9. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to the next step.
8 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the engine switch off. • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to the next step.
No | Go to the next step.
9 | VERIFY TROUBLESHOOTING OF DTC P0152 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the WDS or equivalent. • Perform the Repair Verification Drive Mode. (See OBD DRIVE MODE [MZR-CD (RF Turbo)].) • Is the PENDING CODE for this DTC present? | Yes | Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to the next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZR-CD (RF Turbo)].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | DTC troubleshooting completed.