Oxygen Sensors for Honda Civic (1999-2000) 1.6L Upstream

Direct-Fit Upstream Oxygen Sensor for 1999-2000 Honda Civic

What it Does: The Upstream Oxygen Sensor replaces the degraded pre-catalytic converter lambda sensor on the 1999-2000 Honda Civic to restore accurate air-fuel ratio monitoring, correct closed-loop fueling, and eliminate engine hesitation.

The Stock Honda Civic Signal Drift and Element Contamination

Over thousands of thermal cycles, factory zirconia sensors on the EJ6 and EJ8 chassis suffer from heavy carbon fouling, silicone poisoning, and internal heater burnout. As the internal platinum electrodes erode, sensor voltage switching speeds drop dramatically. This latency prevents the factory ECU from tracking real-time combustion changes on the D16Y7 and D16Y8 powerplants, resulting in rich-running conditions, compromised fuel economy, erratic idle hunting, and typical P0130-series check engine lights.

The Engineering Solution

Built as a direct plug-and-play solution, this upstream oxygen sensor features a fast-acting ceramic sensing element housed in a 304 stainless steel slotted shell. A fast-reacting internal ceramic heater brings the sensor up to closed-loop operating temperature rapidly during cold starts, drastically cutting down on unburned hydrocarbon emissions. Precision-calibrated internal circuitry delivers instantaneous voltage swing signals between 0.1V and 0.9V, allowing the engine computer to maintain optimal stoichiometric trim tables under all driving loads.

Technical Specifications

Compatibility

• 1999-2000 Honda Civic DX (1.6L SOHC D16Y7)
• 1999-2000 Honda Civic LX (1.6L SOHC D16Y7)
• 1999-2000 Honda Civic EX (1.6L SOHC VTEC D16Y8)
• 1999-2000 Honda Civic CX (1.6L SOHC D16Y7)

Frequently Asked Questions

Does this fit the EJ6 and EJ8 Civic?
Yes, this is a direct fit for the 1999-2000 Honda Civic equipped with the 1.6L D-Series engine in the upstream manifold or front pipe location.

Will replacing this sensor clear an active P0135 trouble code?
Yes, if the diagnostic trouble code is triggered by an open or high-resistance circuit in the factory pre-cat heating element, this direct replacement resolves the fault.

The Honda Precision Standard

Engineered to meet rigorous JDM reliability standards, this sensor restores throttle crispeness and clean combustion to help your high-revving 1.6L Honda engine run efficiently at peak performance.