helmuthimmel10

Matrix NOx Sensor Issue

I own a 2002 Toyota Matrix with a gasoline engine. The check engine light came on, and the diagnostic check says there's an error with the NOx sensor. I also noticed a slight exhaust leak. I'm wondering if it's a bad cable or plug. Anyone else had a similar emission sensor issue?

The owner of a 2002 Toyota Matrix experienced a check engine light, with diagnostics indicating an error with the NOx sensor. A slight exhaust leak was also noted, raising concerns about a potential issue with the sensor's cable or plug. A similar case suggested that the NOx sensor, located after the catalytic converter, might be faulty and require replacement. The recommended solution is to have a workshop inspect and possibly replace the sensor.

Did this summary help you solve your problem?

4 comment(s)

I had a similar issue with my Toyota Matrix (not sure of the year). The NOx sensor is part of the exhaust system and reduces pollution. It's an emission sensor, and if it fails, the car detects that the exhaust values are out of range, turns the check engine light on and stores the error. Have you checked the sensor itself for any visible damage?

Thanks. I haven't really looked at the sensor yet. Where exactly is the NOx sensor located in the exhaust system? I'd like to check for corrosion or obvious damage.

It's usually located after the catalytic converter. I couldn't see any damage to mine, so I went to a workshop. They confirmed the sensor was faulty and needed to be replaced. It might be hard to replace yourself without the right tools. A workshop should be able to do it quickly. It is part of the exhaust system.

Thanks a lot! I'll take it to a workshop to have them check the NOx sensor and its connections. I already got a cost estimate of around 95€ for a new NOx sensor and the repair. Appreciate the help!

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

TOYOTA

community_crosslink_rmh_model

MATRIX