P1169 1996 HONDA CIVIC Possible Causes
- Faulty Air-Fuel Ratio Sensor 1
- Air-Fuel Ratio Sensor 1 harness is open or shorted
- Poor electrical connection in Air-Fuel Ratio Sensor 1 circuit
How to Fix Error Code P1169 1996 HONDA CIVIC?
Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1169 1996 HONDA CIVIC Meaning
The Air-Fuel Ratio Sensor (A/F) 1 is installed in the exhaust system and detects the oxygen concentration in the exhaust gases. The A/F sensor sends the output voltage to the Engine Control Module (ECM). A heater for the sensor element is built into the A/F sensor (Sensor 1). It is activated and heats the sensor to stabilize and speed up the detection of oxygen concentration by controlling the current flowing through the heater. The current increase stabilizes when the voltage applied to the element electrode reaches a certain range because the amount of oxygen flowing through the diffusion layer is limited. The current is proportional to the oxygen concentration in the exhaust gases, so the air-fuel ratio is detected by measuring the current. The ECM compares a preset target air-fuel ratio with the detected air-fuel ratio and controls the fuel injection.
When the A/F sensor (Sensor 1) voltage is low, the air-fuel ratio is lean and the ECM uses A/F feedback control to output rich control. When the A/F sensor (Sensor 1) voltage is high, the air-fuel ratio is rich and the ECM uses A/F feedback control to output lean control.