P0167moderate severityPowertrain
O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
on 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD
What this code means
The PCM detects a fault in the heater circuit of bank 2, sensor 3 oxygen sensor. The heater helps the sensor reach operating temperature quickly.
Symptoms
- Check engine light on
- Delayed closed-loop operation
- Poor cold-start fuel economy
Common causes
- Faulty O2 sensor heater element
- Blown fuse
- Wiring or connector fault
- Faulty PCM
Diagnostic steps
- Scan for stored codes and freeze frame
- Check heater fuse and power supply
- Measure heater element resistance
- Replace oxygen sensor if heater is faulty
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1