DTC P0133:00, P0153:00 [MZI-3.7]

id0102d2311800

DTC P0133:00 DTC P0153:00 | P0133:00: A/F sensor (RH) circuit slow response P0153:00: A/F sensor (LH) circuit slow response
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DETECTION CONDITION | • P0133:00 indicates slow response of A/F sensor (RH) circuit • P0153:00 indicates slow response of A/F sensor (LH) circuit • The PCM monitors oxygen sensor response time by commanding a calibrated fuel control routine. This routine sets the air fuel ratio to a calibrated limit to produce a predictable oxygen sensor signal amplitude. For vehicles with universal heated oxygen sensors (HO2S), the test fails if the oxygen sensor signal does not reach the predicted amplitude within a predetermined response time. For vehicles with heated oxygen sensors (HO2S), the test fails when the oxygen sensor amplitude is less than the predicted minimum amplitude limit.
POSSIBLE CAUSE | • Contaminated A/F sensor • Incorrect fueling • MAF sensor malfunction • Exhaust leaks • Open or short circuit between PCM and A/F sensor • Inlet air leaks • Deteriorating A/F sensor • A/F sensor heater malfunction • PCM 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 FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available? | Yes | Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | PERFORM KOER SELF-TEST • Verify that the engine is at normal operating temperature. • Perform the KOER self-test. (See KOEO/KOER SELF TEST [MZI-3.7].) • Are any DTCs present other than P0133:00 or P0153:00? | Yes | Go to the appropriate DTC troubleshooting. (See DTC TABLE [MZI-3.7].)
No | Go to the next step.
4 | INSPECT FOR SOURCE OF POTENTIAL A/F SENSOR CONTAMINATION • Investigate the following items as potential sources of A/F sensor contamination: ― Use of unapproved silicon sealers ― Fuel contaminated by silicon additives ― Excessive oil consumption ― Glycol leaking internally in the engine ― Lead-contaminated fuel ― Short drive cycles in cold weather ― Use of unapproved cleaning agents • Is a concern present? | Yes | Repair the source of the contamination. Change the engine oil and oil filter. Then go to Step 6.
No | Go to the next step.
5 | VERIFY A/F SENSOR RESPONSE TEST RESULTS • Access the DIAGNOSTIC MONITORING TEST RESULTS for the O2S11 and O2S21 • Is the indicated value greater than the minimum threshold? | Yes | Unable to duplicate or identify the concern at this time.
No | Replace the suspect A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [MZI-3.7].) Then go to the next step.
6 | VERIFY TROUBLESHOOTING OF DTC P0133:00, P0153:00 HAS BEEN COMPLETED • Verify that all disconnected connectors are reconnected. • Clear the DTC from the PCM memory using the M-MDS. • Perform the OBD DRIVE MODE up to HO2S (Step 5). (See OBD DRIVE MODE [MZI-3.7].) • Retrieve DTCs using the M-MDS. • Is the PENDING CODE for this DTC present? | Yes | Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZI-3.7].) Go to the next step.
No | Go to the next step.
7 | VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZI-3.7].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZI-3.7].)
No | Troubleshooting completed.