Engine Controls - MIL ON And DTC P262600 Or P262900 Stored

Engine diagnosis warning lamp active - The fault code P262600 or P262900 relating to the oxygen sensor upstream of the catalytic converter may be stored in the engine control unit

Topic number LI49.00-P-054888

Version 1

Design group 49.00 General

Date 10-26-2012

Validity Model 166 / 207 / 212 / 216 / 218 / 221 with engine 278 Each only with SA code 801 and without K01, or with SA code 802 and without K01

Reason for change

Complaint:
Engine diagnosis warning lamp active:

The following fault codes may be stored in the engine control unit:

P262600 "The connection of the trimming resistor of oxygen sensor 1 (cylinder bank 1) has an electrical fault or an open circuit"

or

P262900 "The connection of the trimming resistor of oxygen sensor 1 (cylinder bank 2) has an electrical fault or an open circuit"

Cause:
Heating element of oxygen sensor damaged.

Remedy:

1. Replace left and right oxygen sensor upstream of CAT.

2. Perform post-documentation of SA code K01 in VeDoc (contact UHD)

3. Program engine control unit with latest software.

Note:
If the latest engine control unit software has already been installed, SCN coding will suffice, once the oxygen sensor was replaced and post documentation conducted.





Symptoms








Control unit/fault code





Parts








WIS-References