P1052moderate severityPowertrain
A/F Sensor 1 (Bank 2) Heater Control
on 2003 Infiniti FX45 4.5L V8 · AWD
What this code means
The bank 2 air/fuel ratio sensor heater current is abnormal, delaying closed-loop operation. Comparable to generic P0051/P0052 heater circuit faults.
Symptoms
- Check engine light on
- Higher emissions
- Cold-start hesitation
Common causes
- Faulty A/F sensor bank 2
- Heater circuit short or open
- Corroded connector
- ECM heater control fault
Diagnostic steps
- Retrieve fault code
- Inspect sensor connector and pins
- Test heater resistance and supply
- Replace A/F sensor if 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