Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer thinks the heater part of the oxygen sensor in the engine is getting too much power. It's like if a toaster was getting too hot because it was plugged in too long.
The P1167 code indicates that the heater circuit in the upstream oxygen sensor (Bank 1 Sensor 1) is receiving a higher than expected voltage signal.
The oxygen sensor (HO2S) heater circuit is designed to bring the sensor up to operating temperature quickly. The Engine Control Module (ECM) monitors the voltage and current of the heater circuit. If the ECM detects a signal that is too high, it triggers the P1167 code.
• Check Engine Light is on
• Poor fuel economy
• Engine runs rough
• Faulty oxygen sensor
• Wiring issues in the heater circuit
• Faulty ECM
HO2S: Heated Oxygen Sensor
ECM: Engine Control Module
• Use a scan tool to check for the P1167 code.
• Inspect the wiring and connectors for damage.
• Test the oxygen sensor heater circuit with a multimeter.
• Replace the faulty oxygen sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $450
Moderate
• Honda Accord
• Toyota Camry
• Nissan Altima
• Regular maintenance checks
• Ensure proper wiring connections
• Use quality replacement parts
Sensor Issue
• Have the vehicle inspected by a professional mechanic.
• Avoid driving long distances until the issue is resolved.
Check if the oxygen sensor is covered under the vehicle's emissions warranty.
This code has been commonly reported in vehicles with aging oxygen sensors or those with wiring issues.
Moderate – It's important to address this issue to avoid potential engine performance problems.
Ignoring this code may lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in closed loop mode
The oxygen sensor is located on the exhaust manifold of the engine, before the catalytic converter.
Q: Can I drive with a P1167 code?
A: It's not recommended to drive for long periods with this code active, as it may affect fuel efficiency and emissions.
Q: How do I reset the P1167 code?
A: After fixing the issue, you can reset the code with an OBD-II scanner.
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Fitment Required · Vehicle-fitment part
Relevant when the code or supporting diagnostics point toward upstream or downstream oxygen-sensor faults.
This code family often involves upstream or downstream oxygen-sensor diagnosis.
Verify exact sensor position and vehicle fitment before buying.
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Fitment Required · Vehicle-fitment part
Relevant when catalyst-efficiency or emissions faults persist after proper diagnosis.
Catalyst-efficiency faults sometimes point toward converter problems after proper testing.
Catalytic converters are highly vehicle-specific and should not be purchased by code alone.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.