Search the Community
Showing results for tags 'o2 sensor'.
Found 1 result
Nasty problem with my CAN-Lambda. On startup, watching the runtime values "ECU Status" tab, Lambda 1 box: Before startup, it's OK/diagnostic/waiting for rpm.After startup it cycles. Calibration Heating ErrorAfter heating code 33 Open circuit APE-IPE code 16 Heated too longWhile heating, the temperature very rapidly rises to 500-600c (2-4 seconds depending on exhaust gas temperature) before the code 16.What I've tried: Carefully inspected wiring harness on o2 sensors. No issues.Carefully inspected wiring harness on CAN-Lambda. No visible issues, but I couldn't disassemble the pins to verify the crimps on APE and IPE wires (lack special tool or understanding of connector).Replaced o2 sensor with a brand new one from Amazon. Exactly the same behavior.Allowed the engine to reach operating temperature with mixed low and high idle.Verified 0 CAN 1 Receive Error Counter.Verified 0 CAN 1 Transmit Error Counter.Verified 0 ECU Fault CodesVerified operating battery voltage 14.2vLog file is attached. Observe parameters Lambda 1, Lambda 1 Error, Lambda 1 Status, Lambda 1 Temp to see the cycle. It's the same with both LSU 4.9 sensors I've tried. Pclr is attached for 4age 20v engine. It's a work in progress. Log 2017-02-16 9;36;52 pm.llg 4age 20v.pclr