NOx Sensor ME229792

BG 201129 (OE ME229792): function on the vehicle

NOx Sensor ME229792 is supplied by BEST GROWTH under part number 201129, cross-referenced to OE ME229792, as a direct-fit aftermarket nox sensors. In service it supplies the emissions-monitoring value the OBD system uses to decide whether the SCR stage is still working within its legal window. A drifting cell triggers inducement long before the catalyst itself is worn out.

BG 201129 is built to the position defined by its OE application on a 12V electrical system on the platform from Mitsubishi Fuso. Position, calibration and connector layout are part of the specification, so a part that physically fits is not automatically the correct part.

Because the sensor carries its own control module, most "sensor" faults are really bus, supply or ground faults at the connector — the electrical side is worth ten minutes before the part is ordered.

Fitment for Mitsubishi Fuso and OE cross reference

BG 201129 replaces 2 OE references: ME229792 and 5WK9 6680B, covering cross applications. Always confirm the number printed on the removed part, including any supersession issued by the vehicle manufacturer.

Recorded vehicle coverage for 201129 includes Mitsubishi Fuso, typically on Canter FE160 4P10 2012+. Coverage lists are a starting point for identification, not a substitute for checking the OE number on the vehicle.

Where several OE numbers appear against one BG reference, they are supersessions or regional variants of the same specification. Ordering by ME229792 and quoting the number on your part lets our technical team confirm the variant before despatch.

Symptoms that lead to replacing ME229792

These complaints bring a vehicle in with the Mitsubishi Fuso nox sensors under suspicion. None of them prove BG 201129 has failed on its own, which is why the checks below matter before a replacement is ordered.

• upstream and downstream values reading almost identically under load
• intermittent fault that clears after the engine cools and returns when hot
• SCR efficiency below threshold or NOx-signal-implausible fault codes
• DEF over-consumption with no visible leak
• torque derate or speed inducement with a full, in-spec DEF tank

Checks before fitting BG 201129

Aftertreatment faults are usually system faults. Working through these checks prevents a repeat failure after the new nox sensors is fitted.

• Confirm supply voltage, ground quality and bus termination before condemning the sensor module.
• Inspect the harness for heat damage and the connector for moisture and green corrosion.
• Check for exhaust leaks ahead of the sensor boss; a diluted sample reads low NOx.
• Read the sensor's own dew-point release time — a cell that never heats is a supply or module fault.
• Verify DEF concentration with a refractometer before blaming the measuring cell.

Quality, packaging and ordering 201129

BG 201129 is manufactured and tested to aftermarket replacement standards, with electrical, leakage and functional testing carried out before packing on the 12V specification. Bulk and retail packaging, private-label cartons and customer-specific labelling are available for distributors and workshop groups.

Send OE ME229792 or the number printed on your part, the engine code and the vehicle identification number with your enquiry, and our technical team will confirm the correct reference, current stock position and lead time before you commit to an order.

Frequently asked questions

Does BG 201129 replace OE ME229792?

Yes. BG 201129 is listed against ME229792 and 5WK9 6680B. Confirm the number printed on the removed part and any manufacturer supersession before ordering.

Which vehicles does BG 201129 fit?

Recorded coverage includes Mitsubishi Fuso. It is supplied as a direct-fit aftermarket nox sensors on 12V systems. Adaptation, reset or relearn procedures required by the vehicle manufacturer still apply after installation.

Does this fault code always mean the nox sensors has failed?

No. Exhaust leaks, wiring and connector damage, reductant quality, dosing performance and upstream engine faults can all produce the same codes. Validate those inputs before replacing BG 201129.