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It seems that some of our users have encountered a known bug with error code p1131. This issue occurs due to a number of factors. We will discuss this below. Definition. DTC P1131 relates to bank 1 oxygen sensor related insufficient switch or new sensor 1 failure. This call code indicates that the system has adjusted the rich value for an excessively lean engine air-fuel ratio.
Definition. DTC P1131 is related to insufficient delay caused by oxygen sensor bank 1, or it is sensor 1 that is depleted. This complication code indicates that the system is also correcting a “rich” to overly “lean” condition in the air-to-oil ratio in the engine.
Troubleshooting Guide P1131 indicates that the transmission component management system has detected a lean mixture for some #1 engines. Code P1131 can be caused by a vertical vacuum leak, a fuel problem, an injector ignition problem, or a faulty oxygen sensor/probe. You can find a lambda probe to signal this in the #1 exhaust pipe before the catalytic converter.
Find Causes
DTC P1131 means that the transmission controller type has detected an absolute lean condition for engine group # 1. The P1131 code may be caused by a vacuum leak, a problem with the fuel source injector. Power supply, ignition problem, or malfunctioning of the tested oxygen sensor.
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Inspect the engine vacuum lines first. Replace any vacuum lines that may be damaged or leaking. If the vacuum lines are OK, go to the ignition system. Frequently check the spark plugs, spark plug wires, distributor cap and distributor rotor if installed. If the ignition device looks good, check the fuel system and oxygen sensor.
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Replace a damaged or simply leaky vacuum line. If the vacuum lines are OK, move on to the ignition system if desired. Check spark plugs, spark plug wires, distributor cap and distributor rotor if applicable. If the ignition system is OK, check the fuel system and oxygen sensor.
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OBD II action code P1131 is common on many Ford vehicles, including the Ford F150, Ford Ranger, Taurus, Ford Ford Explorer, Ford Expedition, Ford Mustang, and Ford Escort.
Introduction To P1131 For Ford Error Vehicles
Code P1131 will appear when you receive feedback from the lambda probe (or oxygen). The oxygen sensor / lambda probe responsible for determining the oxygen content in the exhaust gases is gasoline. Based on this controlThe PCM (Powertrain Module) controller determines whether the core is running lean or rich.
What is Ford DTC P1151? This DTC is reported by a heated exhaust oxygen sensor or oxygen sensor (HO2S). This sensor is used to check the amount of environment to ensure accurate air / fuel filling. A failed test means that there is absolutely not enough air in your gasoline. This could be the result of poor air intake.
A lean mixture condition occurs when the engine itself is running on less fuel or too much air, eventually causing DTC P1131 on Ford vehicles.
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An engine running on a finely tuned mixture can result in gradual acceleration and reduced fuel consumption. Therefore, the following is important in understanding P1131 in Ford vehicles and finding ways to resolve this code.
Read more: Ford 302 vs 351W: which engine to choose?
P1131 Ford Code Definition And Meaning
To put it simply, a P1131 OBD II code displayed on a specific Ford vehicle indicates that the PCM has detected a problem. By estimating the amount of O2, the PCM determines if our engine is running on a very lean or fuel mixture. The combination of curves can cause completely different problems, so contact P1131 is shown.
Repair the air leak at the air mass flow sensor assembly.wow.Repair or replace the hoses attached to the valve in the EGR system.Repair or replace any pipes or valves connected to the PCV system.Replace damaged oxygen sensor and/or connections.Also repair and replace damaged vacuum leaks.
Although an optimized fuel mixture is almost certainly preferred for the following reasons:
- Best fuel economyperformance
- Better acceleration
- Reduced exhaust emissions
- Longer engine life
On the contrary, a lean-burn engine can cause many problems, which may well be combined with each other or occur separately. This will be discussed in the following sections.
Repair any air leaks from the MAF sensor bracket.Repair or replace any hoses or valves attached to the exhaust gas recirculation system.Repair or replace any connected tubing or possibly a valve in the PCV system.Replace damaged HO2S and / or connector.Repair or replace if damagedvacuum leaks.
Definition. If the lambda probe or heated lambda probe shows a ground condition at the end of the last test, it means that it is correcting too rich a level. The test fails if the energy management system fails to respond to a switch within the time associated with the calibrated value.
What is a Ford P1151 DTC? This DTC may be reported by your heated exhaust oxygen or HO2S sensor/sensor. This sensor is used to check the O2 level to ensure an accurate air/fuel ratio. A failed test means there is definitely not enough air in your feed. This may be the result of poor air intake.
