Mike Klein
Regular Member
- Joined
- Mar 22, 2017
- Points
- 13
Hi al!
My Z is due for inspection and the dreaded check engine light is on. Ran the scanner and it comes up with 5 codes.
First two are codes 25 and 55, Lambda Sensor Heater -Bank 1 - O2 sensor and Lambda Sensor Heater -Bank 2 – O2 Sensor.
I recently replaced both pre-cat O2 sensors and while it cleared the original fault, it now comes up with these two.
Also, when I looked at the sensor cables, the feed cable going to bank 2 sensor was not fed correctly and laid up against the engine and melted some of the wire insulation, down to bare wire....#1 was fine. Replaced both sensors...probably needed it with 177K miles and I have no idea if they were ever replaced.
Not I get these sensor heater errors. Ideas?
The other 3 look like they may be related, they come up in order, 50, 35 and 126:
50: EVAP Control Valve or Response Monitoring Level 2
35: Aux. Air Injection System Relay
126: Activation Tank Leak Pump Solenoid
Any thoughts on these error codes? is one causing the others or?
Reset codes after O2 sensors replaced pre-cat.
Also, repaired the cable running to bank #2 sensor.
The code errors came in after the above was done. Drove it several times and re-read codes. Cleared and read again, The error codes I listed above were read after all of this.
My Z is due for inspection and the dreaded check engine light is on. Ran the scanner and it comes up with 5 codes.
First two are codes 25 and 55, Lambda Sensor Heater -Bank 1 - O2 sensor and Lambda Sensor Heater -Bank 2 – O2 Sensor.
I recently replaced both pre-cat O2 sensors and while it cleared the original fault, it now comes up with these two.
Also, when I looked at the sensor cables, the feed cable going to bank 2 sensor was not fed correctly and laid up against the engine and melted some of the wire insulation, down to bare wire....#1 was fine. Replaced both sensors...probably needed it with 177K miles and I have no idea if they were ever replaced.
Not I get these sensor heater errors. Ideas?
The other 3 look like they may be related, they come up in order, 50, 35 and 126:
50: EVAP Control Valve or Response Monitoring Level 2
35: Aux. Air Injection System Relay
126: Activation Tank Leak Pump Solenoid
Any thoughts on these error codes? is one causing the others or?
Reset codes after O2 sensors replaced pre-cat.
Also, repaired the cable running to bank #2 sensor.
The code errors came in after the above was done. Drove it several times and re-read codes. Cleared and read again, The error codes I listed above were read after all of this.
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to the Forum from West Cumbria, England. Sorry, can't help with the issues, some techies will be along shortly. Cracking pics of your Zed (Zee) 
