Failed upstream oxygen sensor (bank 1, sensor 1) due to contamination or age; Damaged or corroded wiring or connector at the sensor or ECM; Blown fuse that supplies power to the oxygen sensor heater circuit; Exhaust leak before the sensor allowing outside air to affect readings; ECM software issue or internal fault, though rare; Contamination from coolant or oil burning in the engine

DTC codes / Nissan codes / P1164

P1164 · NissanHO2S11 Circuit Fault Bank 1 Sensor 1

Q: What does code P1164 mean?

HO2S11 Circuit Fault Bank 1 Sensor 1. P1164 on Nissan vehicles indicates a fault in the heater circuit or signal circuit of the upstream heated oxygen sensor (HO2S) on bank 1, sensor 1. The engine control module (ECM) monitors the sensor's heater current and signal voltage, and it sets this code when the circuit behaves outside the expected range, such as an open, short, or excessive resistance.

P1164 on Nissan vehicles indicates a fault in the heater circuit or signal circuit of the upstream heated oxygen sensor (HO2S) on bank 1, sensor 1. The engine control module (ECM) monitors the sensor's heater current and signal voltage, and it sets this code when the circuit behaves outside the expected range, such as an open, short, or excessive resistance.

SystemPowertrain

Code typeNissan specific

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms
Rough idle or stumbling during acceleration due to incorrect air-fuel mixture
Poor fuel economy as the ECM defaults to a rich mixture
Failed emissions test because the oxygen sensor is not switching properly
Occasional engine surging or hesitation at steady speeds

Common causes, most likely first

Failed upstream oxygen sensor (bank 1, sensor 1) due to contamination or age
Damaged or corroded wiring or connector at the sensor or ECM
Blown fuse that supplies power to the oxygen sensor heater circuit
Exhaust leak before the sensor allowing outside air to affect readings
ECM software issue or internal fault, though rare
Contamination from coolant or oil burning in the engine

How to diagnose and fix it

Check for any related diagnostic trouble codes (DTCs) and freeze-frame data to confirm the fault condition
Inspect the oxygen sensor wiring and connector for damage, corrosion, or loose pins
Test the heater circuit resistance and supply voltage according to Nissan service information
Check the fuse for the oxygen sensor heater circuit and replace if blown
Perform a smoke test to rule out exhaust leaks before the sensor
Replace the upstream oxygen sensor if tests indicate a faulty sensor
Clear the codes and verify the repair with a test drive and live data monitoring

Before replacing the oxygen sensor

A blown fuse for the oxygen sensor heater is a common cause that is often overlooked, so always check fuses before condemning the sensor.
Exhaust leaks upstream of the sensor can cause false readings and set this code, so inspect the exhaust system carefully.
The code may be set by a contaminated sensor from coolant or oil burning, which can also damage the catalytic converter if left unchecked.
On some Nissan models, this code can be triggered by a faulty ECM ground or poor connection at the ECM, so verify grounds before replacement.
Using a scan tool to monitor the oxygen sensor heater current and signal voltage can confirm whether the sensor or the circuit is at fault.

Can I keep driving with P1164?

You can usually drive with this code, but avoid prolonged driving because the engine may run rich, reducing fuel economy and potentially damaging the catalytic converter over time. Have the vehicle diagnosed promptly to prevent further issues.

Tools that help

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Guidance is general and written for Nissan vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.