E-43 code - Technical Troubleshooting discussion in Forkliftaction's forums

Cat Lift Trucks (& Caterpillar) P9000:
E-43 code

Hello, I have a cat p 9000 with a Nissan TB 4.5L in-line 6. Serial number AT29D50141 with a E-43 code. Can anyone help? Thanks in advance.

Posted 19 Nov 2019 07:26
Discussion started by Maldo209
California, United States

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E-43
(P1815)(P1817)
Air-Fuel ratio does not cross stiochiometry for a long time during intended closed-loop operation.
- After engine warned with LPG fuel, when oxygen sensor signal is sticked and does not reverse at a condition of A/F ration is excessively lean or rich.
- After engine is started with LPG fuel, when closed-loop control does not start within a predetermined period.

Probably the O2 sensor, if it is faulty it can cause this problem.
You'll need the TB45 diagnostic tool to monitor the O2 sensor and see if it is malfunctioning.

Posted 3 Dec 2019 17:18
Reply by swoop223
North Carolina, United States

You've been swooped!
swoop223@gmail.com

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