O2 Oxygen Sensor Upstream Downstream for Chevrolet Spark (2016-2022) 1.4L

Direct-Fit Upstream & Downstream O2 Oxygen Sensor Kit for 2016-2022 Chevrolet Spark (M400)

What it Does: This matched upstream and downstream oxygen sensor kit monitors exhaust oxygen content on the 2016-2022 Chevrolet Spark (M400) LV7 1.4L engine to regulate closed-loop fuel trim and verify catalyst efficiency.

The Stock Chevrolet Spark Oxygen Sensor Failure

Factory oxygen sensors on the M400 Spark equipped with the LV7 1.4L inline-four endure severe thermal cycling, carbon soot, and exhaust condensation. Over time, internal ceramic sensing elements suffer thermal shock cracking while internal heater circuits corrode or fail open. Oil vapor or coolant trace contamination coats the zirconia tips, slowing voltage switching between 0.1V and 0.9V. This degraded response skews ECM fuel trim calculations and triggers P0133, P0135, or P0141 fault codes.

Common Symptoms of a Failing OEM Oxygen Sensor

• Check Engine Light / Heater DTCs: Stored codes like P0135 (Bank 1 Sensor 1 heater), P0141 (Bank 1 Sensor 2 heater), or P0171 (lean fuel trim) from sluggish sensor output.
• Erratic Idle & Throttle Hesitation: Delayed upstream voltage feedback forces the ECM into open-loop fueling or improper air-fuel corrections.
• Reduced MPG & Failed Emissions: Rich fueling defaults raise tailpipe hydrocarbon output and cause immediate emissions inspection failure.

The Direct-Fit Heated Zirconia Oxygen Sensor Solution

Replacing both Bank 1 Sensor 1 and Bank 1 Sensor 2 together restores factory closed-loop fuel control and catalyst monitoring on the LV7 1.4L. Each direct-fit sensor features a corrosion-resistant stainless steel body, laser-welded protective shield, and fast-acting internal heater element for rapid light-off. Built to match OEM 12663317 electrical characteristics, the assembly delivers accurate stoichiometric voltage transitions across all RPMs. Factory-style weatherproof connectors and anti-seize coated threads allow plug-and-play installation without wire splicing.

What's Included

• 1 Upstream Oxygen Sensor (Bank 1 Sensor 1)
• 1 Downstream Oxygen Sensor (Bank 1 Sensor 2)

Technical Specifications

Compatibility

• 2016-2022 Chevrolet Spark 1.4L (Bank 1 Sensor 1 and Bank 1 Sensor 2)

Frequently Asked Questions & Fitment Warnings

Does this fit the M400 Spark?

Yes. This is a direct fit for the 2016-2022 Chevrolet Spark equipped with the LV7 1.4L engine. Does not fit 2013-2015 M300 1.2L models or Buick Encore, Chevrolet Cruze, Equinox, Malibu, Trax, Volt, and GMC Terrain applications; confirm engine before ordering.

Will this clear P0135, P0141, or P0133 codes?

Yes, when caused by worn sensor elements or open heater circuits. Replacing both upstream and downstream units restores proper resistance and switching speed, though harness wiring and exhaust leaks should be inspected prior to clearing ECM codes.

Is wire splicing required for installation?

No. Both sensors include OE-style connectors and factory-length leads, requiring only a 22mm (7/8-inch) oxygen sensor socket and proper torque into the exhaust manifold and catalytic converter bungs.

The Chevrolet Precision Standard

Engineered for strict emissions compliance and consistent daily drivability, this matched sensor set keeps your M400 ECM operating in tight closed-loop fuel control. Maintain clean tailpipe output, steady fuel economy, and CEL-free operation on every drive.