Renault L90 Oxygen Sensor Replacement: Complete Guide

Renault L90: A Popular Platform with Specific Sensor Requirements

The Renault L90 platform — which underpins the Logan, Sandero, and Dacia Logan — is one of the most widely sold vehicles across emerging markets including Iran, Eastern Europe, and North Africa. Like all modern vehicles, it relies on a lambda oxygen sensor for accurate fuel management.

Which Oxygen Sensor Does the Renault L90 Use?

The L90 platform uses a Siemens engine management system, requiring a specific lambda sensor for proper operation. KAVRONEX supplies two compatible options:

• OZA 7700274189 — Standard fitment for Renault L90 with Siemens ECU
• OZA H7700274189 — Alternative fitment for Renault L90 with Siemens ECU

Both are 4-wire heated sensors engineered to OE specifications for direct plug-and-play installation.

Symptoms of a Failing L90 Oxygen Sensor

• Increased fuel consumption (common complaint on L90 owners)
• Rough idle or engine hesitation
• Check engine light with P0130–P0135 fault codes
• Black smoke from exhaust
• Failed emissions inspection

Step-by-Step Replacement Overview

1. Allow the engine to cool completely before starting
2. Locate the oxygen sensor in the exhaust manifold (upstream position)
3. Use an O2 sensor socket (22mm) to remove the old sensor
4. Apply anti-seize compound to the threads of the new sensor
5. Torque to manufacturer specification (typically 40–55 Nm)
6. Reconnect the wiring harness and clear fault codes with an OBD scanner

Why Choose KAVRONEX for Your L90?

KAVRONEX sensors are manufactured to OEM tolerances, ensuring accurate lambda readings and full compatibility with the Siemens ECU on the L90 platform. No adaptation required — direct fit, plug and play.

Shop KAVRONEX Renault L90 Oxygen Sensors and get back on the road with confidence.