A flickering engine lamp on a Camry is one of the few Toyota warnings that should not be driven around, because the same condition that misfires a cylinder can cook the catalytic converter if it goes on long enough. The ticket below started as a soft accelerator and ended with a full set of ignition coils and spark plugs, with a second finding caught on the way out.
For a parts buyer the useful signal in this ticket sits in the two fault codes and in what the shop ruled out before ordering anything. The numbers below are kept as recorded, because the difference between a coil job and a deeper repair is exactly the kind of detail a quote should carry.
Case 1 — Camry random misfire with a dead cylinder two (P0300, P0302)
Symptom. A Toyota Camry came in with the engine lamp flickering. Under throttle the pedal felt empty and soft, and the car had lost its normal pull.
Diagnosis. The scan tool returned two codes together, P0300 for random misfire and P0302 for cylinder two. With the engine cover off, the coil and plug of cylinder two told the story on sight. The plug electrode was caked in carbon and the gap had opened well past service, while the coil boot was cracked at the neck, which leaves a leakage path for the spark. The other three plugs were not as far gone but were worn to the end of their life. Before ordering, the shop worked the fuel side the same way a parts buyer should: it checked the injectors, found them working, confirmed the fuel pressure was normal, and found the intake manifold and throttle body carrying carbon that was cleaned but was not the cause.
Fix. Four genuine ignition coils and four spark plugs went in, and a fuel system additive was added to clear the remaining carbon. The codes were cleared and the lamp stayed off. On the way out the shop found the left half-shaft boot seeping grease, so the boot was replaced and re-greased before a worn CV joint could follow.
Parts notes. A Camry misfire on P0300 and P0302 is almost always an ignition-part job, but the parts must match the engine, not the model name. The coil and plug below cover the 2.4 L ACV40 build, and a different-generation Camry takes different numbers. In our catalog:
- Ignition coil 90919-02260, listed for the Camry (ACV40) built from 2006 through 2015 in China, the 2.4 L generation
- Spark plug 90919-01247, listed for the Camry (ACV40/ASV40/GSV40) built from 2006 through 2011
- see the full ignition coils and spark plugs range
The fitment window matters here. The source ticket does not state the Camry’s year, so a buyer should confirm the engine and chassis code before quoting. The 2.4 L ACV40 engine takes one coil and plug set, and the V6 and later-generation cars take another, which is why the chassis code is the only thing that makes an ignition quote safe. The half-shaft boot was a separate line on the same ticket, a driveline part rather than an ignition part, but it is the same lesson: catch the cheap boot before the axle joint wears out.
What this case teaches parts buyers
- Misfire codes travel in pairs. P0300 names the symptom and P0302 names the cylinder, and the pair points at ignition parts before anything in the fuel system.
- Rule out the fuel side before you order. The shop checked the injectors and fuel pressure first, which is what kept the fix to coils and plugs instead of a deeper repair.
- Replace the set, not the one. Three worn plugs and a cracked boot on one coil mean the whole ignition set is due, and a single-cylinder order only buys a return visit.
- Match the engine before you quote. The coil and plug above fit the 2.4 L ACV40 Camry, and the OE number check is the step that keeps a V6 or later-generation order from landing wrong. See also how to identify genuine Toyota parts before accepting a lookalike coil.
- Catch the boot before the joint. The half-shaft boot was caught seeping on the same ticket, and a boot is a few dollars while the CV joint it protects is a far larger order once the grease runs dry.
If you need these ignition parts or the wider engine electrical range for your market, send the OE numbers or chassis codes on WhatsApp or through our contact page. LongTopAuto matches genuine Toyota and Lexus parts by OE number, with fitment confirmed against chassis code and production year.
The LongTopAuto team writes from 25+ years of genuine Toyota and Lexus OEM parts export experience in Guangzhou, China. Our guides come from daily OE number checks, packaging review, and export sourcing work.