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Home >> Chrysler >> 2000 >> Intrepid Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0133: O2 Sensor 1/1 Slow Response, DTC P0139: O2 Sensor 1/2 Slow Response, DTC P0153: O2 Sensor 2/1 Slow Response Or DTC P0159: O2 Sensor 2/2 Slow Response >> Testing
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DTC P0133: O2 Sensor 1/1 Slow Response, DTC P0139: O2 Sensor 1/2 Slow Response, DTC P0153: O2 Sensor 2/1 Slow Response Or DTC P0159: O2 Sensor 2/2 Slow Response: Testing

WARNING: This page is about a different car, the 2002 Dodge Intrepid, 2002 Chrysler Intrepid, 2002 Chrysler Concorde, and 2002 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: Check for contaminants that may have damaged the O2 Sensor such as contaminated fuel, unapproved silicone, oil and coolant.
  1. Turn ignition on, engine not running. With the DRBIII®, read DTCs and record the related Freeze Frame data. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, go to step  6.
  2. Start the engine. Inspect the exhaust for leaks between the engine and the related O2 Sensor. Are there any exhaust leaks? If yes, repair or replace the leaking exhaust parts as necessary. If no, go to next step.
  3. Turn the ignition off. Disconnect the O2 Sensor that is related to the DTC that is set. Turn ignition on, engine not running. Measure the voltage on the O2 Sensor Signal circuit at the disconnected O2 Sensor harness connector. Is the voltage approximately 5.0 volts? If yes, go to next step. If no, check the O2 Sensor Signal circuit for damage, short to ground, open, or short to voltage. Repair as necessary. If okay, check the PCM harness connector terminals for corrosion, damage or terminal push out. Repair as necessary. If connectors are okay, replace PCM. Program the new PCM. See PROGRAMMING .
  4. Measure the voltage on the O2 Sensor Return circuit in the disconnected O2 Sensor harness connector. Is the voltage 2.5 volts? If yes, check the O2 Sensor Return circuit for damage, short to ground, open, or short to voltage. Repair as necessary. If okay, replace PCM. Program the new PCM. See PROGRAMMING . If no, go to next step.
  5. There are no possible causes remaining, replace the O2 Sensor.
    6. NOTE: Check for contaminants that may have damaged the O2 Sensor such as contaminated fuel, unapproved silicone, oil and coolant.
    WARNING: When the engine is operating, do not stand in a direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing.
  6. The conditions that set the DTC are not present at this time. The following may help in identifying the intermittent condition. With the engine running at normal operating temperature, monitor the DRBIII® parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set. Review the DRBIII® Freeze Frame information. If possible, try to duplicate the conditions under which the DTC was set. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any of the above conditions present? If yes, repair as necessary. If no, test is complete.
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