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DTC P0134 [MZR-CD (RF Turbo)]

id0102f1804900

DTC P0134 | A/F sensor no activity detected
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DETECTION CONDITION | • The PCM monitors the input voltage from A/F sensor when the following conditions are met. If the input voltage from the sensor never exceeds 0.1 V for specified period, the PCM determines that sensor circuit is not activated. MONITORING CONDITIONS - Following conditions are met • Engine is running. • Battery voltage is 11-16 V. Diagnostic support note • FREEZE FRAME DATA is available. • DTC is stored in the PCM memory.
POSSIBLE CAUSE | • A/F sensor deterioration • A/F sensor heater malfunction • Leakage exhaust system • Open circuit or short to ground in wiring harness between A/F sensor terminal A and PCM terminal 93 • Insufficient compression • Engine malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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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 repair information availability. • Is any related repair 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 AND STORED DTC Note • If fuel monitor DTC, DTC P0132 is retrieved, ignore it until P0134 is fixed. • Turn the engine switch off, then to the ON position (Engine off). • Verify pending and stored DTCs using the WDS or equivalent. • Are other DTCs present? | Yes | Go to the appropriate DTC troubleshooting procedures.
No | Go to the next step.
4 | IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA • Is DTC P0134 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 | VERIFY CURRENT INPUT SIGNAL STATUS • Warm up engine. • Access O2S11 PID using the WDS or equivalent. • Verify PID while racing engine in PARK or NEUTRAL. • Is PID normal? - Less than 1 mA when suddenly depressing accelerator pedal (rich condition) - More than 1 mA just after releasing the accelerator pedal (lean condition) | Yes | Go to step 10.
No | Go to the next step.
6 | INSPECT INSTALLATION OF A/F SENSOR • Inspect if the A/F sensor is loosely installed. • Is the sensor installed securely? | Yes | Go to the next step.
No | Install sensor securely, then go to Step 12.
7 | INSPECT GAS LEAKAGE FROM EXHAUST SYSTEM • Visually inspect if there is any gas leakage between the exhaust manifold and A/F sensor. • Is there gas leakage? | Yes | Repair or replace any malfunctioning exhaust part, then go to Step 12.
No | Go to the next step.
8 | INSPECT A/F SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between the A/F sensor terminal A (wiring harness-side) to the PCM terminal 93 (wiring harness-side). • Is there continuity? | Yes | Go to the next step
No | Repair or replace the wiring harness for a possible open circuit, then go to Step 12.
9 | INSPECT A/F SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND • Inspect for continuity between the A/F sensor terminal A (wiring harness-side) to body ground. • Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground, then go to Step 12.
No | Go to the next step.
10 | INSPECT SEALING OF ENGINE COOLANT PASSAGE • Perform the ENGINE COOLANT LEAKAGE INSPECTION. (See ENGINE COOLANT LEAKAGE INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Repair or replace the malfunctioning part according to inspection results, then go to Step 12.
No | Go to the next step.
11 | INSPECT ENGINE COMPRESSION • Inspect the engine compression. (See COMPRESSION INSPECTION [MZR-CD (RF Turbo)].) • Is it normal? | Yes | Go to the next step.
No | Perform engine overhaul for repairs, then go to the next step.
12 | VERIFY TROUBLESHOOTING OF DTC P0134 COMPLETED • Make sure to reconnect all disconnected connectors. • Turn the engine switch to the ON position (Engine off). • Clear the DTC from 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.
13 | VERIFY AFTER REPAIR PROCEDURE • Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE [MZR-CD (RF Turbo)].) • Are any DTC present? | Yes | Go to the applicable DTC troubleshooting. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Troubleshooting completed.