Rough idle running rich and DTC code 13

Nistune topics related specifically to the 6303 cpu

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Rough idle running rich and DTC code 13

Post by spec1sef » Thu May 30, 2019 10:57 am

I swapped my perfectly running dyno tuned VG30DETT from a rusted shell to a clean one and used new Wiring specialties engine harness.

When I started the car it idled rough and burns a lot of fuel. It fouled out all 6 spark plugs. Nistune shows "[13] DTC TEMP (start=0)". I am not able to clear this code.

If I run self diagnostic using Nissan Data scan 1, I get "Code 13: Engine Coolant Temperature Sensor Circuit (P0115) >Car started 0 times with this fault".

Would this cause engine to run rough and foul out spark plugs?

I hooked up the ohm meter to temp sensor and got no reading at all. The link below indicates I should be seeing 2-Ohms and below as temp rises. ... emp_Sensor

I checked the ground on the temp sensor harness plug and ground is good.

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Re: Rough idle running rich and DTC code 13

Post by Matt » Thu May 30, 2019 10:26 pm

What is the reported temp input? The DTC comes from open or shorted sensor

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