This vehicle came to our garage with engine power reduction intermittently, when the engine starts from cold, there's no any engine power reduction occurs, but until the engine reaches at its Operating temperature, so when the engine reaches at its Operating temperature the power of the engine reduces and the P0299(p029900) and p004c(p004c00) store ln the ECM and the engine goes to limp mode home but the MIL( engine management light doesn't illuminate on the dashboard.
The investigation and Troubleshooting of the above DTCs are shown and recorded in this video which will hopefully be helpful to you.
Disclaimer:
this video only contains tips and recommendations that could be useful when carrying out vehicle repairs or replacement parts, STANHOPE AUTO REPAIR CENTRE WARDAK is not liable for any damage, harm injury or property damage incurred while carrying out repairs or replacement that are a result of incorrect use or misinterpretation of the provided information purposes only and does not guarantee achievement of specific result. The user is personally liable for incorrect use of repair equipment, tools or vehicle parts, in particular, when this use poses the risk of injury. STANHOPE AUTO REPAIR CENTRE WARDAK strongly recommends being careful and adhering to the safety rules when doing any repair or replace.