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Unicarriers (& Nissan) LO2:
Code p04,fo4

I have a mcugl02f36lv it cranks but not starting,I'm getting fuel and spark code fo4 and p04 displays on dash

• Posted 15 May 2018 20:37
• Discussion started by roc109
• New York, United States

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I checked all the wiring from ecm to relay box and relays and it is not a problem. I just checked the green line of the white line coming from the ecu and it does not bring any voltage or signal to the relay box to activate the relays.

• Posted 1 Feb 2021 02:39
• Reply by Afshin_Ghafoori
• Iran

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What's a bonnet switch,I replaced the key switch,swapped dash cluster.unit cranks and run for about a sec,

• Posted 16 May 2018 10:12
• Reply by roc109
• New York, United States

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Communication error check the bonnet switch

• Posted 15 May 2018 23:19
• Reply by alanmitsi
• essex, United Kingdom

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