P113D,P113E, O2 Sensor 1/1 or 2/1 slow response ( High Frequency)

P113D,P113E code - With the engine running a minimum of 20.0 seconds, fuel level above 12%, battery voltage above 11.0 volts, engine Coolant Temperature (ECT) above 60°C (140°F), engine speed between 1000 and 2750 rpm, manifold Absolute Pressure (MAP) reading is between 21 - 96 Kpa (6.2 - 28.3 in Hg). Set conditions, the Powertrain Control Module (PCM) detects that the oxygen sensor signal does not switch adequately at high frequency.

Possible causes:

• Exhaust leak.
• O2 Sensor 1/1 or 2/1 signal circuit.
• O2 Sensor 1/1 or 2/1 return circuit.
• O2 Sensor 1/1 or 2/1.

Diagnostic test P113D,P113E code

Step 1. Check active DTC

Note : Check for contaminants that may have damaged the O2 sensor contaminated fuel, unapproved silicone, oil, and coolant.

Note : After any repair have been made, verify proper O2 Sensor operation. If all the O2 Sensor voltage readings have not returned to normal, follow the diagnostic procedure for the remaining O2 Sensors.

Start the engine, allow the engine to reach normal operating temperature.

Warning : When the engine operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Failure to follow these instructions may result in possible serious or fatal injury.

With the scan tool, read DTC.

Note : It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the freeze frame data.

Is the DTC active or pending?

Yes, go to step 2.

No, perform the PCM intermittent condition.

Step 2. Checking the Exhaust system for leaks

Turn the ignition off, perform the CHECKING THE EXHAUST SYSTEM FOR LEAKS diagnostic proceudre (see a Sitemap or Label-Non DTC Diagnostic)

Were any problems found?

Yes, repair as necessary.

No, go to step 3.

Step 3. Check the O2 Sensor Signal circuit

Turn the ignition off, disconnect the O2 Sensor harness connector. Turn the ignition on, measure the voltage on the O2 Sensor Signal circuit in the O2 Sensor harness connector.

Is the voltage between 4.1 and 5.0 volts?

Yes, go to step 4.

No, check the O2 Sensor signal circuit for a short to ground, open, or short to voltage and repair if necessary.

Step 4. Check the O2 Sensor Return circuit

Measure the voltage on the O2 sensor return circuit in the O2 sensor harness connector.

Is the voltage at 2.5 volts?

Yes, go to step 5.

No, check the O2 sensor return circuit for a short to ground, open, or short to voltage and repair if necessary.

Step 5. O2 Sensor

Note : Check for signs of contaminants that may have damaged the O2 sensor, such as contaminated fuel, unapproved silicone, oil and coolant.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the O2 sensor and the Powertrain Control Module (PCM).

• Look for any chafed, pierced, pinched, or partially broken wires.
• Look for broken, bent, pushed out or corroded terminals.
• Verify that there is good terminal contact in the O2 sensor and Powertrain Control Module connectors.
• Perform any Service Bulletins that may apply.

Were any problems found?

Yes, repair as necessary.

No, replace the Oxygen sensor.

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