What is the fuel system on demand code?
The vehicle’s PID data was watched very closely as it warmed up. After closed loop operation was obtained, it was noted that both upstream oxygen sensors went well below 0.5 volts and remained there. The fuel system status then went to open loop fault. A review of scan tool data shows a code P1131 and P1151 stored as “On Demand Codes.”
What does it mean fuel system 1 closed autocodes?
Being at operating temperature for the coolant temperature , the 02 sensor would drop out of even though a heater was added to the 02 sensor. Fuel system is a important data this means the heater is at operating temperature and the ECM responds to if. When it is a open fuel system the ECM does not see or use the 02 sensor.
What is fuel system 1 Cl and Ol-drive?
What is fuel system 1 cl and ol-drive? Increase on fuel yes. i hooked my zurich zr13 reader. Code PO174. I open my hood and notice that my air intake tube was detached from air filter box. I have fixed … read more Vocational, Technical or Tra… Car stalls on idle. if i give it some gas it keeps running. Vocational, Technical or Tra…
What does on demand code p1131 stand for?
The fuel system status then went to open loop fault. A review of scan tool data shows a code P1131 and P1151 stored as “On Demand Codes.” The descriptors for these codes indicate that there is a lack of switching from the upstream oxygen sensors as indicated by the processor.
The vehicle’s PID data was watched very closely as it warmed up. After closed loop operation was obtained, it was noted that both upstream oxygen sensors went well below 0.5 volts and remained there. The fuel system status then went to open loop fault. A review of scan tool data shows a code P1131 and P1151 stored as “On Demand Codes.”
Being at operating temperature for the coolant temperature , the 02 sensor would drop out of even though a heater was added to the 02 sensor. Fuel system is a important data this means the heater is at operating temperature and the ECM responds to if. When it is a open fuel system the ECM does not see or use the 02 sensor.
Where can I find the fuel pump code?
The codes may either be directly related to the fuel pump or make reference to an air/fuel ratio problem. A scan tool or a simple code reader can be used to retrieve the information. Many auto parts stores will pull codes for free. Plus, there are inexpensive code reading tools and apps for your smartphone.
How are scan tools used to diagnose fuel pump?
Factory and enhanced scan tools can monitor pressure transducers on the high and low sides of the system. This information can be used to diagnose the health of the low-side and high-side pumps. These tools will have the PID parameters for these components as part of the Mode 6 data.