Peugeot P20EE Fault Code Fix SCR/NOx
P20EE means your Peugeot’s SCR system isn’t cleaning NOx well enough. You’ll see AdBlue warnings, countdowns, or limp mode. We come to you in Stoke-on-Trent and across Staffordshire to test, repair, or apply a safe software solution the same day most weeks.
Open 7 days, 09:00–20:00 · Mobile visit—no tow truck.
What is P20EE on a Peugeot?
P20EE = “SCR NOx Catalyst Efficiency Below Threshold.” The ECU flags that the catalytic reduction of NOx isn’t working well. On Peugeots this often links to AdBlue dosing, NOx sensor readings, exhaust leaks, or catalyst age.
- Common on Peugeot 208, 308, 3008, 5008, 508, Partner, Expert, Boxer.
- Triggers AdBlue warnings and the No start in XXX miles countdown.
Symptoms you’ll notice
- AdBlue light, engine MIL, or “Emission Fault”.
- No-start countdown or start inhibited after countdown ends.
- Limp mode or poor performance.
- Increased AdBlue use or strong ammonia smell (over-dosing).
- Failed MOT emissions or stored NOx efficiency codes alongside P20EE.
Likely causes of P20EE
- NOx sensors drifting or failed (pre/post-cat).
- AdBlue injector blocked, leaking, or carbon build-up.
- Weak AdBlue pump / low pressure, crystallised lines.
- Exhaust leaks before the SCR catalyst.
- SCR catalyst aged or contaminated.
- Old software version with poor dosing strategy.
Our mobile fix options
- Full diagnostic test – scan, freeze-frame, live NOx flow, pressure & temp checks.
- Targeted repairs – NOx sensors, AdBlue injector/pump, line flush, exhaust leak fix.
- Software update – dosing map updates where supported.
- AdBlue/SCR delete (software-only) – permanent switch-off when repair isn’t viable. No cutting or drilling.
We’ll explain costs and outcomes before work. You choose the route: repair or delete.
Prices & time on site
- Diagnostic visit: from £60–£90 (deducted if we complete a repair or delete).
- Common repairs: sensor or injector replacement time 45–90 minutes in most cases.
- Software delete: usually 45–60 minutes on-site; software warranty 12 months.
You turn the key; the van starts first time. No countdowns. No limp mode.
Helpful links
- AdBlue removal Stoke on Trent – mobile delete & reset service.
- AdBlue repair – SCR diagnostics & repair on site.
- NOx sensor solutions – testing, coding, and software options.
- Peugeot P20EE article – quick read with on-road results.
Booking & coverage
Same-day slots most weeks across Stoke-on-Trent, Newcastle-under-Lyme, Stafford, Crewe and nearby. We’re fully mobile and insured.
- Phone: 07503 134 362
- Email: info@adbluespecialist.co.uk
- Hours: Mon–Sun, 09:00–20:00
Peugeot P20EE – FAQs
Can I drive with P20EE?
Short trips may be possible, but the car can enter limp mode or lock out starting after a countdown. Fix it as soon as you can to avoid a roadside stop.
Will a software delete remove the warning?
Yes—our software-only delete disables AdBlue/SCR logic, clears P20EE and related countdowns, and prevents returns. No hardware removal is needed.
What if I want to repair, not delete?
No problem. We test NOx sensors, dosing, pump pressure and exhaust leaks, then repair what’s faulty. We only suggest a delete when repair isn’t sensible.
How long does the fix take?
Most repairs or a software delete are completed within an hour on your driveway or depot.