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Posts Tagged: P0172

P0172 GM Service Bulletin #18-NA-246

P0172 GM Service Bulletin #18-NA-246 GM has issued a service bulletin #18-NA-246 to address a P0172 code on the vehicles listed below.   This Bulletin applies to the vehicles that have fuel enriched engine oil due to short driving intervals.  Vehicles affected by P0172 GM Service Bulletin #18-NA-246 Buick Envision 2016 Regal 2014-2019 Cadillac ATS 2013-2019 Cadillac CTS 2014-2019 Chevrolet Camaro 2016  -2019 Chevrolet Equinox 2018  -2019 Chevrolet Malibu 2013-2019 Chevrolet Traverse 2018-2019 GMC Terrain 2018-2019 All of the above vehicles equipped with the 2.0L LTG engine manufactured before May … Read More

P0172, fuel in oil, Rough idle, engine run-on GM

P0172, fuel in oil, Rough idle, engine run-on GM Diagnose and fix P0172, fuel in oil, Rough idle, engine run-on GM GM has issued a service bulletin #PIP4783B to address P0172, fuel in the oil, Rough idle, engine run-on GM vehicles listed below. Before you perform any diagnostic tests, pull the engine oil dipstick, and check for the presence of fuel. GM has determined that a P0172 System Too Rich (Bank 1) may be caused by a defective high-pressure fuel pump that’s leaking fuel into the crankcase when the plunger … Read More

GM Service bulletin 18-NA-246 for P0172 trouble code

Service bulletin 18-NA-246 fix for P0172 trouble code on 2.0L LTG series engine GM has issued service bulletin 18-NA-246 to address a P0172 trouble code on all 2016-2018 Buick, Cadillac, Chevrolet and GMC vehicles equipped with the 2.0L LTG  engine Cause of P0172 GM states that driving the vehicle in short intervals may not allow crankcase temperatures to rise to the point of evaporating water and gas from a cold start-up. The excessive fuel collects in the crankcase. To correct the problem, change the oil and filter. Preventing P0172 On … Read More

oil in air intake duct

Oil in air inlet duct GM has issued a service bulletin to address a problem with oil in air intake duct, along with a check engine light, poor acceleration, and throttle body freezing. The bulletin applies to the following vehicles equipped with the 3.6L engine: 2008-11 Buick Enclave 2007-11 Chevrolet Malibu 2009-11 Chevrolet Traverse 2007-11 GMC Acadia 2007-10 Pontiac G6 2007-09 Saturn AURA 2007-10 Saturn OUTLOOK GM states that the problem occurs after a cold start up or when driving in cold temperatures. If you scan the PCM, you may … Read More

P0172 System too Rich (Bank 1)

Fix codes P0172, DTC P0172, Ford Focus 2.3 engine, P0172 – System too Rich (Bank 1) Ford has issued a technical service bulletin (TSB) 05-10-22 to address DTC P0172, P0172 – System too Rich (Bank 1). The bulletin applies to 2003-04 Ford Focus vehicles with the 2.3L PZEV engine and 4F27E transmission. The check engine light will be lit, but you may not notice and drivability symptoms. Do NOT start replacing parts. Ford has issued new software to correct the problem. Take the vehicle to a Ford dealer or an … Read More

P0172 — system too rich

P0172 System too Rich How to diagnose a P0172 system too rich condition Start by checking live data short and long term fuel trims. A high long-term fuel trim, above 10%, means the computer is adding a lot of fuel. A negative long-term fuel trim means the computer is subtracting fuel and still can’t keep the air/fuel mixture in balance. Why the ECM might have to add fuel 1) Vacuum leak or un-metered air is entering the engine causing a lean condition in the exhaust. The ECM see this lean … Read More

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