Rick's Free Auto Repair Advice

Posts Tagged: DTC

Fix code P2181 on Chrysler

Fix P2181 Cooling System Performance Trouble Code on Chrysler Vehicles If your check engine light comes on and you get a P2181 cooling system performance trouble code, don’t panic. The code can come up on 2007-09 Chrysler Sebring and Dodge Avenger with the 2.7 and 3.5L engines, as well as 2008-09 Town & Country and Grand Voyager vans with the 3.3, 3.8, and 4.0L engines, plus the 2009 Dodge Journey and Challenger with the 2.7 and 3.5L engines, and the 2007-10 Chrysler Magnum with the 2.7 and 3.5L engines. First … Read More

P0128 temperature gauge dead – GM vehicles

Fix P0128 temperature gauge dead – GM vehicles If you get a P0128 code AND the temperature gauge is dead, head right for the thermostat. When a thermostat goes bad on a GM vehicle, the PCM sets a P0128 trouble code and commands the cooling fans to run and disables the temperature gauge. Don’t waste time trying to fix the gauge. First, replace the thermostat. If the gauge still doesn’t work, then you can start diagnosing that problem after you’ve cleared the P0128 code.   © 2012 Rick Muscoplat

P0125

Fix code P0125 Insufficient Coolant Temperature For Closed Loop Fuel Control When you start a cold engine, the computer runs off of factory programming and ignores input from the sensors. This is called Open Loop. As the engine warms up to operating temperature, the computer switches to Closed Loop, where it computes air/fuel mixtures based on actual engine conditions. When you get this code, it can mean you have a bad thermostat or low coolant(engine not heating up to operating temp), or a bad engine coolant temperature sensor. See the … Read More

P0174

Fix code P0174 System Too Lean (Bank 2) If you have a P0174 System Too Lean (Bank 2)  trouble code, read this to understand what it means Lean codes are incredibly difficult to diagnose. And it’s one trouble code where you don’t want to start throwing parts at the problem. The guys at the parts store will tell you to replace the Oxygen sensor. Nice guess, but probably wrong. They’re assuming that the fuel mixture is correct but the sensor is reporting it wrong. Oxygen sensors DO wear out. But what … Read More

P0171 trouble code

Fix code P0171 trouble code System too lean (Bank 1) If you have a P0171 trouble code System too lean (Bank 1) trouble code, read this to understand what it means Lean codes are incredibly difficult to diagnose. And it’s one trouble code where you don’t want to start throwing parts at the problem. The guys at the parts store will tell you to replace the Oxygen sensor. Nice guess, but probably wrong. They’re assuming that the fuel mixture is correct but the sensor is reporting it wrong. Oxygen sensors … Read More


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