P0217 on Honda: How to Diagnose & Fix
Engine Overtemperature Condition
1 Honda model · 2 documented issues · 2 critical · $1,000-$8,000 repair
P0217 on Honda by model: symptoms, diagnosis and fix
A class-action lawsuit (filed in U.S. and Canadian courts) alleges the turbocharged 1.5L i-VTEC engine cannot properly manage the added compression and heat, so engine coolant seeps through grooves in the cylinder head, degrades the head gasket, and leaks INTERNALLY into the combustion chambers. This is distinct from external turbo coolant/oil-line leaks: here coolant ends up in the cylinders or mixed with oil, causing misfires, internal corrosion, overheating, head-gasket failure and premature engine wear. Reported across 2016-2022 Civic (and shared CR-V/Accord). Plaintiffs allege Honda knew internally since ~2017 but denied warranty repairs.
Common Symptoms
- Unexplained coolant loss without external leak
- White/sweet-smelling exhaust smoke
- Engine misfires and power loss on the highway
- Overheating or fluctuating temperature gauge
- Milky oil / coolant-oil contamination
How to Fix
Diagnose with a combustion-leak (block) test, coolant chemistry check, and inspection for coolant in oil or unexplained coolant loss with white exhaust. Repair ranges from head-gasket replacement to cylinder-head or full engine replacement depending on damage. Owners should document symptoms and check eligibility under any warranty extension or the pending class action. Keep coolant topped and avoid driving overheated.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Honda 06110-5AA-A01 cylinder-head gasket kitOEMHonda 06110-5AA-A01
Supply the upper-engine seals/gaskets for a professionally confirmed tenth-generation 1.5T head-gasket repair Fitment/availability: 2016-2021 Civic 1.5T only after VIN confirmation and head/block inspection.
- Honda 06110-6A0-A01 engine cylinder-head gasket kitOEMHonda 06110-6A0-A01
Eleventh-generation repair-kit branch for a confirmed 2022 Civic Si head-gasket failure Fitment/availability: 2022 Civic Si 1.5T 6MT only on the verified reference page. Confirm VIN and engine before purchase.
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Sources for this issue (3)
A casting/manufacturing defect in the R18 1.8L engine block causes the cylinder block to crack — typically on the back of the block beneath the oil/air separator, in the PCV-system area. The crack lets coolant slowly seep out (and into the PCV system), so the car loses coolant with no visible external puddle at first, then overheats and can be destroyed if driven. CarComplaints documents 63 complaints on the 2008 model year alone, and Honda issued TSB 10-048 plus a 10-year warranty extension to replace affected short blocks. Most owners discover the problem (often only 80k-145k miles) after the extension expired. Distinct from the modern 1.5T turbo coolant issues — this is the naturally-aspirated 8th-gen block.
Common Symptoms
- Gradual unexplained coolant loss with no visible external leak
- Engine temperature gauge climbing higher than normal
- Overheating, steam, or coolant smell after warm-up
- Low coolant warning / repeated topping off
- Eventual hard overheat and engine failure if ignored
How to Fix
Confirm the crack (often visible on the rear of the block under the oil/air separator, or diagnosed via coolant loss with no external leak and combustion-gas test). The Honda repair is short-block/engine replacement; aftermarket fix is a remanufactured/used R18 long block or short block. If within the (now-expired for most) 10-year extension, Honda covered it free. Use a quality coolant and never run the engine hot once coolant loss is noticed.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Honda 10002-RNA-A50 1.8L gasoline short blockOEMHonda 10002-RNA-A50
Factory short-block replacement after a bulletin-location crack is confirmed and the cylinder head remains serviceable Fitment/availability: 2006-2011 Civic 1.8L gasoline/non-NGV catalog branch; bulletin 10-048 applies only to listed 200…
- ATK 557 remanufactured R18A1 1.8L long blockOEMATK 557 / JEGS 059-557
Confirm VIN, engine code, included components, installation-kit requirements, core return, freight, warran
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (3)
P0217 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0217 mean on a Honda?
P0217 stands for "Engine Overtemperature Condition." This code sets when the engine control module detects that the engine has exceeded its safe operating temperature, meaning the engine is overheating based on the coolant temperature sensor reading. Because excessive heat can warp the cylinder head, blow the head gasket, or seize the engine, the computer flags this condition and may reduce power to protect the engine. It generally indicates a real cooling system problem rather than just a sensor glitch, though a faulty sensor can occasionally cause a false reading. An overheating engine should be stopped as soon as it is safe to avoid serious damage. On Honda it is documented across 1 model: Civic.
What are the most common causes of P0217?
The most common causes of P0217 are: Low coolant level or a leak in the cooling system, Stuck-closed thermostat, Failed water pump, Faulty radiator cooling fan or fan circuit, Clogged or blocked radiator, Faulty coolant temperature sensor giving a false high reading, Head gasket failure or combustion gases in the coolant, Air pocket in the cooling system after service. The specific cause varies by vehicle.
How much does it cost to fix P0217 on a Honda?
Published repair estimates on Honda range from $1,000 to $8,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.