AUDI CAHA Diesel Injectors
Buy AUDI CAHA diesel injectors, OEM tested and calibrated to original specifications. All injectors include 12-month warranty and are in stock for fast UK delivery.
0 compatible injectors • OEM Tested • 12-Month Warranty
Remanufactured Injector stocks AUDI CAHA diesel injectors tested to OEM specifications. Each CAHA injector includes new seals, nozzles, and 12-month warranty. UK-based specialists with same-day dispatch. Find your exact part below.
This page covers injector problems, symptoms, and verified solutions for CAHA engines.
Used by UK garages daily
Every injector is tested before dispatch — if the fault persists, you're covered by our 12-month warranty.
For CAHA engines, most issues are confirmed with testing before replacement.
What happens next
Take your time — we're here when you're ready.
The CAHA is Audi's 2.0-litre TDI producing 143PS, widely used in the A4 B8 platform from 2008 to 2015. Sharing architecture with VW's EA189 family, the CAHA uses Bosch common rail injectors optimised for Audi's refined driving character. Our remanufactured CAHA injectors restore the smooth torque delivery Audi owners expect.
Vehicles Using the CAHA Engine
AUDI A4
A4 B8 2.0 TDI 143
2008-2015
AUDI A4 Avant
A4 Avant B8 2.0 TDI
2008-2015
AUDI A5
A5 8T 2.0 TDI 143
2008-2017
AUDI A5 Sportback
A5 Sportback 2.0 TDI
2009-2017
AUDI Q5
Q5 8R 2.0 TDI 143
2008-2017
Common CAHA Injector Problems
Solenoid coil resistance drift affecting response time
Nozzle seat wear from aluminium particle contamination
Return line seal hardening causing fuel leaks
Cold start issues from aged piezo elements
DPF regeneration failures linked to injection quantity errors
Available AUDI CAHA Injectors
No injectors currently listed for the CAHA engine code.
Browse all AUDI injectors →Why Remanufactured Injectors Are Recommended for CAHA
CAHA uses Bosch solenoid injectors coded via VCDS/ODIS. The coding process is identical to VW variants - enter IMA values from each new injector. Audi torque spec is 25Nm for injector bolts. Always replace the complete set of copper sealing washers.
The AUDI CAHA engine requires injectors calibrated to specific flow rates and spray patterns. At Remanufactured Injector, our technicians test every CAHA injector to original manufacturer specifications using OEM-grade diagnostic equipment.
AUDI CAHA Injector Cost
AUDI CAHA diesel injector replacement cost UK ranges from £150 to £400 per injector for remanufactured units. The CAHA engine uses precision-calibrated injectors that require exact flow rates and spray patterns.
Testing CAHA injectors costs £20 each and confirms which specific injector is causing problems. Common CAHA symptoms like rough idle, black smoke, or poor fuel economy often stem from just one faulty injector.
Our remanufactured CAHA injectors are tested to AUDI original specifications with new seals, nozzles, and 12-month warranty included. Same performance as new, significantly lower cost.
When to Test vs When to Replace
Test Injectors When...
- • Engine warning light appeared but car still runs
- • Fuel economy has dropped noticeably
- • Rough idle or hesitation on acceleration
- • You want to confirm which injector is faulty before buying
- • Garage quotes full set replacement but you want a second opinion
Replace Injectors When...
- • Testing has confirmed injector failure
- • Visible damage, leaks, or Black Death carbon buildup
- • High mileage (150,000+ miles) and multiple symptoms
- • Previous repair attempt failed
- • Vehicle is undriveable or will not start
What Most Customers Choose
Testing first. At £20 per injector, testing identifies exactly which unit needs replacing — saving an average of £300-£600 by avoiding unnecessary full-set replacement. If testing confirms failure, we credit the test cost against your injector purchase.
Common Questions
Will this fix my problem?
If your issue is caused by a faulty injector, yes. Our injectors are tested to OEM specifications and will restore proper fuel delivery. If you're unsure, we recommend testing first — it's only £20 per injector and confirms exactly what's wrong.
What if testing shows they're OK?
That's good news — it means your injectors aren't the problem. You've spent £80 to potentially save £600+ on unnecessary parts. We'll help you identify other possible causes based on your symptoms.
How fast is delivery?
Next working day delivery on orders before 2pm (UK mainland). Most items ship same day from our UK warehouse. You'll receive tracking details by email once dispatched.
Same decision most professional mechanics make.
What You Get
No irreversible steps until results are confirmed.
AUDI CAHA Injector FAQs
Content reviewed for accuracy in 2026
Other AUDI Engine Codes
Common Problems with AUDI CAHA Injectors
The AUDI CAHA engine commonly experiences injector issues related to solenoid valve wear causing injection timing drift, nozzle tip carbon deposits from DPF regeneration cycles, and return line seal failures after 120,000 km. The CAHA Bosch injectors are generally reliable but sensitive to fuel quality. Professional testing identifies exactly which injector is failing before expensive replacements.
Symptoms of Failing AUDI CAHA Injectors
Failing AUDI CAHA injectors typically cause: rough idle or vibration at standstill, excessive white or black smoke on startup, poor acceleration and "limp mode" activation, increased fuel consumption (10-20% worse), engine warning light with P0201-P0204 fault codes, hard starting especially when cold, and diesel knock or rattling sounds. VW/Audi CAHA engines commonly display cold start hesitation first. If you notice any of these symptoms, professional injector testing (£20/injector) can confirm the diagnosis before committing to replacement.
Related Audi Resources
Audi CJCA 136PS variant
Lower-output alternative
Audi A4 diesel injector guide
B8 platform coverage
Audi injector testing service
VCDS-compatible diagnostics
Shop CAHA injectors
OEM tested replacements
This guide is updated regularly to reflect the latest injector data and testing standards.
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