Fault Code Lookup › Powertrain codes › P0307
P0307 Powertrain · generic OBD-II
Cylinder 7 Misfire Detected
P0307 is a standard code covering engine, transmission, fuel and emissions. It names the system that logged the fault, not the part that failed. Below: which cars owners reported it on, what happened, and recalls on those cars, from 12 complaints filed with NHTSA. Updated November 3, 2026.
- 12owner reports
- 5car models
- 0mention a crash
- 0mention a fire
- 2014–2025model years
Which cars get code P0307?
Every model whose owners mentioned P0307 in a complaint, most reports first. Each year opens that car's full problem report. Popular models collect more reports because more of them are on the road.
Where does P0307 show up?
By brand
- GMC6
- Chevrolet5
- Ford1
Component the owner filed it under
Is there a recall for P0307?
The others concern the component owners file this code under (Engine) on the same cars; they may or may not relate to the code. Recall repairs are free; check your VIN at nhtsa.gov/recalls.
Engine And Engine Cooling: Engine: Hard Parts Internal/Mechanical General Motors LLC (GM) is recalling certain 2021-2024 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles equipped with a 6.2L V8 gas engine. The connecting rod and/or crankshaft engine components may have manufacturing…
2021 GMC Sierra, 2022 Chevrolet Silverado, 2021 GMC Yukon. Full risk and remedy on each car's report.
Engine General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 4500, 5500 and 6500 vehicles and 2017-2019 Chevrolet Silverado 2500 and 3500 vehicles and GMC Sierra 2500 and 3500 vehicles equipped with Duramax 6.6 liter diesel engines and an optional engine-block heater. The engine block…
2018 GMC Sierra, 2017 Chevrolet Silverado. Full risk and remedy on each car's report.
What happened when owners saw P0307?
10 of the 12 reports, spread across the models above, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
On [XXX], my vehicle suffered a complete loss of propulsion on the highway, displaying fault codes P0324 and P0016. The vehicle was taken to Boyd's Tar Heel Chevrolet in Roxboro, NC, where the engine block was replaced under the official GM 6.2L engine safety recall.The truck was delivered back to me, and on the very first day I drove it—only 28 miles from my house—it suffered a secondary catastrophic loss of propulsion on the highway on [XXX]. The check engine light began flashing violently, indicating an immediate catalyst-damaging safety hazard, and the vehicle displayed fault code P0307 (Cylinder 7 Misfire).The dealership explicitly instructed me to stop driving the vehicle immediately…
4//6/26 took truck in for knocking noise on the passenger side of the engine- Service could not reproduce the knocking. 6-26-26 low oil light comes on just 3000 miles after oil change - took truck to the dealer - dealer put 2 quarts of oil in the engine. 7-5-26 truck is running poorly took truck into dealership truck displays code P0307 Cylinder 7 Misfire. scoped cylinder 7 and it was damaged beyond repair from piston ring failure. 8-6-26 New 6.2L L87 engine installation complete.
Purchased the vehicle on April 7, 2025. On 7/15/25, the car had 6948 mi. and started running rough, had a loss of power, an odor from the engine, and then on the display: check engine, blinking green vehicle light, and a message stating that the car was lowering for stability control. Took the vehicle to the closest Chevrolet service. The service dept. determined that code found P0307 and P0300, cylinder seven had the most misfires above 500. After completing oil service, the vehicle began to click on the passenger side; however, it was not misfiring. They inspected and found potential lifter issue. Found ticking coming from cylinder 7 and verified misfires. Found 2 pushrods damaged. Heard…
TRUCK STARTED MISSING AND BACKFIRING WHEN ACCELERATING FROM A STOP, LOST POWER ASSIST TO BRAKES, LIMPED 1/2 MILE TO MY HOUSE . ENGINE WAS CLATTERING , MISSING, STALLING AND BACKFIRING. CHECK ENGINE LIGHT ON CODE P0307. BROKE #7 VALVE SPRING(INTAKE) , LOST KEEPERS, DROPPED VALVE , WHICH PISTON HIT, FORD DEALER SAY IT NEEDS AN ENGINE FOR $10,300.00 AND NO COVERAGE AT 69,000. BROKEN VALVE SPRINGS ARE A KNOWN PROBLEM . DANGEROUS WHEN YOU LOSE POWER ASSIST TO BRAKE PEDAL BECAUSE OF NO VACUUM. REQUEST FORD SERVICE TO ASSIST BECAUSE SPRINGS ARE DEFECTIVE
The contact owns a 2021 GMC Yukon. The contact stated that while his wife was driving 65 MPH on the highway at higher speeds, the vehicle shuddered abnormally. The check engine, ECU, and traction control warning lights illuminated, and the message "Shut off Vehicle as soon as Possible" was displayed. The contact's wife pulled over to the shoulder of the road, and the vehicle was towed to an independent mechanic for diagnosis. The mechanic retrieved dDTCs: P0307 and P050D, indicating a failed roller lifter, valve spring, and valve roller lifters. The vehicle was later towed to a local dealer, where the dealer diagnosed that the lifters had failed and needed to be replaced. The manufacturer…
Another GM truck AFM failing. It failed at 70,000 miles causing P0307 cylinder 7 misfire. No aggressive driving just commuting to work. Truck just got done with a new oil change. It's another to add to the hundreds/thousands seen on Reddit threads of all 5.3/6.2 AFM/DFM that this organization turns a blind eye to.
Code p0307 misfire on cylinder 7. Have gotten code 3 times in last month. Lights on dash and reduced power. Less than 50k miles when first occurred. Turn off and back on all lights gone except for engine light which goes off in a day then runs fine. Dealer quoted $3k+ to replace injectors. $60k+ for a new vehicle it should last more than 2 years and 50k miles. 5 yr 60k mile engine and power train warranty but they pick and choose what components to cover. After looking online I see many owners with same issues. Some with hardly any miles. Other recalls done with different motor sizes. HELP!!!
The injector failure in my 2018 GMC Sierra 1500 resulted in repeated misfire conditions (P0300 and P0307), causing the vehicle to lose power unexpectedly while driving. The engine would hesitate, shake, and struggle to accelerate, especially during merging or highway speeds. These symptoms created a significant safety hazard because the vehicle could not reliably maintain speed or respond to throttle input. Sudden power loss in traffic exposes the driver and surrounding motorists to an increased risk of collision, particularly during lane changes, freeway merging, intersection crossings, and passing maneuvers. The dealership confirmed internal injector failure, and the vehicle has been out…
check engine light came on and the code was cylinder 7 misfire 'code p0307'. it was replaced the first time and only lasted less than two months. the same code came up again and when they put a new one in they had to tow it back because it failed not even 30 minutes later.
At 103,000 my 2020 AT4 5.3L V8 had a P0307 code thrown. Cylinder 7 misfire. Driving highway speeds, sudden loud pop and then the service engine light came on and automatic braking engaged, and the idle got extremely rough. Ended up being a bad lifter, bent rod, tore lobe off of the camshaft. Roughly 8,000 for the repair, new cam, new lifters, spark plugs and coil packs. Now only about 3,000 miles later, driving, sped up to pass on the interstate and another misfire, P0306 this time Cylinder 6. Same symptoms check engine light, automatic braking, rough idle. Seems to be another failed lifter and bent rod. Currently awaiting diagnostic for this second misfire issue. When speaking with the tow…
P0307: questions drivers ask
What does code P0307 mean?
P0307 is a generic OBD-II powertrain code. Its standard definition is "Cylinder 7 Misfire Detected". The code tells you which system set the fault, not which part failed; the owner reports on this page show what it meant in practice for 5 car models.
Which cars get code P0307 most often?
In NHTSA owner complaints, P0307 is mentioned most for the GMC Sierra (5), Chevrolet Silverado (4), Chevrolet Suburban (1), across 5 models and model years 2014 to 2025. Popular models collect more reports because more of them are on the road.
Is there a recall for code P0307?
No NHTSA recall text names P0307 directly. 2 recalls on the cars that report this code concern the same component owners name most (Engine); they may or may not relate to the code. Check your VIN at nhtsa.gov/recalls.
What should I do if my car shows P0307?
Write down when the code appeared and what the car did (warning lights, loss of power, noises, speed, weather). Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer or independent workshop to read the stored freeze-frame data before anyone clears the code, and keep the repair order. If the car loses power in traffic, stop driving it. CarHooq does not diagnose: these are owner reports and official recall notices, not repair advice.
How this page was made
CarHooq read the text of every owner complaint filed with NHTSA for 19 US and European brands (model years 2012 onwards) and picked out the diagnostic trouble codes owners wrote down. This page lists every mention of P0307. The definition is the generic SAE J2012 wording; a carmaker may use the code slightly differently. Nothing here is a diagnosis. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 3, 2026. How CarHooq reports are made.
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