Safety Warning

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HOMESERVICE MANUALSDODGE AND RAM2013DART GTREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 11 (2.0L - DTCS P000A TO P0455)DIAGNOSIS AND TESTINGP0135-O2 SENSOR 1/1 HEATER PERFORMANCEDIAGNOSTIC TEST

2013 Dodge and Ram Dart GT

Diagnostic Test

2013 Dodge and Ram Dart GTSECTION Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

OXYGEN SENSOR 1/1 HEATER CONTROL OPERATION
1. Turn the ignition off.
  NOTE:
  Wait a minimum of 8 minutes to allow the sensor to cool down before continuing. The sensor voltage should stabilize between 2.47 and 2.52 volts.
2. Turn the ignition on.
3. With a scan tool, actuate the Oxygen Sensor 1/1 heater control.
4. With the scan tool, monitor O2 Sensor 1/1 volts for at least two minutes.
  Does the voltage stay between 2.47 and 2.52 volts?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
OXYGEN SENSOR 1/1
1. Turn the ignition off.
  NOTE:
  Wait a minimum of 8 minutes to allow the sensor to cool down before continuing.
2. Disconnect the Oxygen Sensor 1/1 harness connector.
3. Measure the resistance of the O2 Sensor 1/1 heater element across the Oxygen Sensor 1/1 connector between the heater control terminal and the ground terminal.
  NOTE:
  The O2 heater element resistance should be measured at 70°F (21.1°C). The resistance value will vary at different temperatures.
  
  Is the resistance between 2.0 and 30.0 Ohms?
  
  Yes
  - Go To 3
  No
  - Replace the Oxygen Sensor 1/1 in accordance with the service information. Refer to SENSOR, OXYGEN, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
HIGH RESISTANCE IN THE (K99) O2 SENSOR 1/1 HEATER CONTROL CIRCUIT
1. Turn the ignition off.
2. Disconnect the Oxygen Sensor 1/1 harness connector.
3. Disconnect the Powertrain Control Module (PCM) C2 harness connector.
4. Measure the resistance of the (K99) O2 Sensor 1/1 Heater Control circuit between the Oxygen Sensor 1/1 harness connector and the Powertrain Control Module (PCM) C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (K99) O2 Sensor 1/1 Heater Control circuit for an open circuit or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
HIGH RESISTANCE IN THE (Z904) GROUND CIRCUIT
1. Measure the resistance between battery (-) and the (Z904) Ground circuit in the O2 Sensor harness connector.
  NOTE:
  A good chassis ground can also be used in place of the battery (-).
  
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the excessive resistance in the (Z904) Ground circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Oxygen Sensor 1/1 and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals.
4. Perform any Technical Service Bulletins (TSBs) that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.