The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to diagnose possible ETB concerns. The IDS has a limited refresh rate when reading these PIDs and cannot display quickly enough to validate a concern. The PCM automatically monitors these inputs more accurately and will set diagnostic trouble codes (DTCs) when appropriate. Using these PIDs for diagnostics will lead to inaccurate results and improper ETB replacements. If a concern is intermittent and no DTCs are present, refer to historical DTCs and the PC/ED, Section 3 No DTCs Present Index chart for further information.
full bulletin at NHTSA ↗2005 Ford Focus engine problems
severe Owners of the 2005 Ford Focus have filed 17 NHTSA complaints about the engine, typically surfacing around 32,500 miles at roughly $3,100 to repair (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Failure mileage
Complaints
17
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2005 Focus (this page) | 17 |
| 2006 Focus | 7 |
| 2007 Focus | 11 |
| 2008 Focus | 9 |
| 2009 Focus | 9 |
1fire
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
MIRFIRE DIAGNOSTIC TROUBLE CODES P0316, P0300, P0301, P0302, P0303, OR P0304 - SERVICE TIP.
full bulletin at NHTSA ↗MIL ON/ROUGH RUNNING - MUTIPLE DTCS -0201, P0202, P0203 OR P0204 PRESENT IN THE POWERTRAIN CONTROL MODULE (PCM).
full bulletin at NHTSA ↗POSSIBLE ENGINE DAMAGE - INSTALL SPECIAL SERVICE TOOLS PRIOR TO REMOVING CRANKSHAFT PULLEY BOLT - SERVICE TIP.
full bulletin at NHTSA ↗LONG CRANK/HARD START - 2.0L AND 2.3L ENGINE WITH MTX-75 TRANSAXLE.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
A 2005 Focus owner's experience with this engine cluster is likely to be one problem after another. The misfire issue is the most persistent: check engine light flashing during acceleration, loss of power mid-pass, and repeated repair attempts that don't stick. One owner's car wouldn't even make it home after the fifth dealer attempt. Cold-start stumbling is common too—Ford issued TSB 04-23-4 for it, but the fix is temporary.
Stalling without warning happens at highway speeds, idle, and sometimes just when you're braking in neutral on the freeway—terrifying if you're doing 65 and suddenly lose power steering and brakes. Dealers have looked at these cars four, five times without finding the cause. Engine mounts fail early and cheap, turning the car into a vibrating mess at idle. One owner with only 33,900 miles got quoted $500 for mounts a shop called a Focus defect.
One owner's car shut down repeatedly in warm weather (fuel line too close to the exhaust, he alleges), another had an alternator fail at 86k and recur after repair, and one rare incident involves a complete engine fire that destroyed the block. Poor fuel economy is universal—25 mpg highway instead of the advertised 32, with dealers dismissing the complaint. Stuck throttle body and uncontrolled engine revving at stops round out the chaos.
Same Ford Focus engine reports on nearby years: 2007
Failure modes owners describe
Intermittent Misfire & Engine Light Flashing
Check engine light flashes intermittently, usually during hard acceleration or passing, with loss of power. Owners report multiple repair attempts that don't resolve the issue. In one case, the car became undriveable after a dealer repair.
When: From purchase (brand new); recurring; at low to moderate mileage
Symptoms owners cite: Check engine light flashing intermittently; Misfire during hard acceleration; Loss of power during acceleration; Engine stumbling and cranking difficulty in cold/damp weather
Codes mentioned: P0300 (or similar misfire code)
Repairs/costs cited: Multiple repair attempts by dealers; TSB 04-23-4 performed for cold-start misfire (temporary fix); no lasting resolution reported
Recalls/TSBs owners mention: TSB 04-23-4 (cold-start misfire procedure)
Defective Engine Mounts
Engine mounts fail prematurely, causing severe shaking at idle and while driving. One shop identified this as a common defect in the Focus platform. Owners report this occurs at very low mileage.
When: Low mileage (33,900 miles; 53,085 miles)
Symptoms owners cite: Severe shaking at idle; Severe shaking while driving; Vehicle bouncing up and down when stopped
Repairs/costs cited: Mechanic quoted $500 for replacement; repair not completed by owners
Intermittent Stalling
Engine stalls without warning at highway speeds and at idle, recurring intermittently. Multiple dealer visits have failed to diagnose or repair. Incidents occur both while moving and stopped.
When: 21,000 to 86,000 miles
Symptoms owners cite: Stalling without warning at 25–55 mph; Stalling while idling in traffic; Stalling when brake pressed in neutral on freeway; Engine illuminates check engine light, oil light, and battery light during stall events; Loss of power steering and power brakes during stall
Repairs/costs cited: Mechanics unable to diagnose; dealers unable to find cause after multiple visits
Alternator Failure
Alternator fails, causing vehicle to stall and all electrical functions to seize. Initial dealer repair did not resolve the issue; failure recurred intermittently.
When: 86,000 miles
Symptoms owners cite: Vehicle stalled at 35 mph; All electrical functions seized; Engine warning light illuminated
Repairs/costs cited: Dealer diagnosed and serviced alternator; repair failed
Throttle Body Binding / Stuck Accelerator Pedal
Accelerator pedal becomes stuck while driving. Dealer diagnosed throttle body binding and replaced the throttle body assembly.
When: <UNKNOWN>
Symptoms owners cite: Accelerator pedal stuck while driving
Repairs/costs cited: Throttle body replaced by dealership
Engine Overrevving at Stop
Engine revs up excessively when coming to a stop and repeats the behavior for 2–3 minutes. Dealer unable to identify cause after inspection.
When: <UNKNOWN>
Symptoms owners cite: Engine revving up when coming to a stop; Revving repeats for 2–3 minutes; Nearly caused multiple intersection collisions
Repairs/costs cited: Dealer found no mechanical fault
Fuel System Issue (Fuel Line Proximity to Exhaust)
Fuel line routed too close to exhaust manifold, causing vehicle to shut down in warm weather. Car will restart after 15–20 minutes and run again until the problem recurs. One owner cites a Takata recall reference.
When: Warm weather; recurring
Symptoms owners cite: Vehicle stops running in warm weather; Requires 15–20 minute wait to restart; Occurs repeatedly in warm conditions; fine in winter
Repairs/costs cited: Repair attempted but issue persists
Recalls/TSBs owners mention: Takata recall referenced by owner
Engine Fire
Engine caught fire while driving, destroying the entire engine. Owner reports all fluids were full and engine was not overheating at the time.
When: <UNKNOWN>
Symptoms owners cite: Engine fire while driving; Complete engine destruction
Repairs/costs cited: Engine destroyed; no diagnosis given
Poor Fuel Economy
Vehicle consistently achieves poor highway fuel economy (averaging 25 mpg highway instead of dealer-promised 32 mpg). Dealer claimed onboard computer showed 31.7 mpg, but owner disputes accuracy. Issue persists after 15,000 miles.
When: From purchase onward; 15,000 miles tested
Symptoms owners cite: Highway fuel economy of 25 mpg or worse; Below dealer estimates and EPA ratings
Repairs/costs cited: Dealer suggested break-in period (5,000 miles); no further action; many Focus owners report same problem
Synthesized from 17 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had engine trouble with your 2005 Ford Focus?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2005 Ford Focus?
It's a meaningful issue. 17 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Across the 13 complaints that reported odometer mileage, most engine failures cluster between 15,528 and 66,080 miles, with the median around 32,500. A quarter of owners report trouble before 15,528; a quarter make it past 66,080. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2005/Ford/Focus.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.