P1130 FORD F150 Possible Causes
- Faulty upstream oxygen sensor, bank 1
- High or low fuel pressure
- Dirty/faulty MAF sensor
- Engine vacuum leak
- Leaking fuel injector or fuel pressure regulator
- Faulty Powertrain Control Module (PCM)
How to Fix P1130 Code FORD F150?
Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
When is the Code Detected?
The Heated Exhaust Gas Oxygen Sensor (HEGO) sensor is monitored for switching. The test fails when the HO2S fails to switch due to a circuit or fuel at or exceeding a calibrated limit.
Possible Symptoms
- Check Engine Light on (or Service Engine Soon warning light)
P1130 FORD F150 Meaning
The Heated Oxygen Sensor (HO2S) Monitor is an onboard strategy designed to monitor the HO2S sensors for any malfunction or deterioration that could affect emissions. Under specific conditions, the fuel control or upstream HO2S sensors are checked for proper output voltage and response rate (the time it takes to switch from lean to rich or rich to lean). The downstream HO2S sensors used for Catalyst Monitor are also monitored for proper output voltage. An input is required from the Engine Coolant Temperature (ECT) or Cylinder Head Temperature (CHT), Intake Air Temperature (IAT), Mass Air Flow (MAF), Throttle Position (TP), and Crankshaft Position (CKP) to activate the HO2S Monitor. The Fuel System Monitor and Misfire Detection Monitor must also have completed successfully before the HO2S Monitor is activated.
• The HO2S detects the oxygen content in the exhaust stream and delivers a voltage between zero and 1.0 volt. At lean stoichiometry (air/fuel ratio of about 14.7:1 for gasoline engines), the HO2S will generate a voltage between zero and 0.45 volt. At rich stoichiometry, the HO2S will generate a voltage between 0.45 and 1.0 volt.
• Once the HO2S Monitor is activated, the upstream HO2S signal voltage amplitude and response frequency are checked. Excessive voltage is determined by comparing the HO2S signal voltage to a maximum threshold voltage that can be calibrated.
• A fixed frequency closed-loop fuel control routine is executed and the upstream HO2S voltage amplitude and output response frequency are observed. A sample of the upstream HO2S signal is evaluated to determine if the sensor is capable of switching or has a slow response rate.
• An HO2S heater circuit fault is determined by turning the heater on and off and looking for a corresponding change in the OSM and
measuring the current through the heater circuit.
• The MIL is activated after a fault is detected on two consecutive OBD II drive cycles.