2123995 Pierburg EGR valve 2123995: symptoms, fault codes and OEM cross references.
EGR valve group reported for XF/CF Euro 6 applications. Use this page for searches around 2123995, 2187602, 2256375 and Pierburg 7.04253.88.0.
OEM report needs verification
This number appears in duplicated or conflicting report groups. Confirm by VIN, engine type, installed connector and photos before quoting or fitting.
- One report labels 2123995 as MX-13; another labels it Pierburg MX-11. The website should display VIN verification for this number.
What drivers and mechanics usually notice.
These are practical, workshop-style symptom phrases written for search and support conversations. They are not a substitute for live diagnostic data.
Coolant loss without external leak
EGR commanded versus actual mismatch
DPF regeneration failure
Rough idle or stumble after hot restart
Engine warning lamp with EGR position fault
Why 2123995 usually fails
- Electric motor seizure after soot deposits increase flap resistance.
- Gasket-side coolant seepage after high mileage.
- Soot and oil sludge stop the valve reaching commanded position.
Before replacing the part
- Source reports conflict on MX-11 versus MX-13 coverage, so verify by VIN and installed connector before quoting.
- Look for coolant staining and sticky movement at the flap shaft.
P-codes reported with 2123995.
| Code | Lookup hint | Related symptom area |
|---|---|---|
| P0404 | EGR position or range/performance issue | Coolant loss without external leak |
| P0487 | EGR throttle / flow-control circuit range issue | Coolant loss without external leak |
| P1489 | EGR actuation / position report code | Coolant loss without external leak |
| P1490 | EGR actuation / position report code | Coolant loss without external leak |
| P1494 | EGR position or actuator report code | Coolant loss without external leak |
| P1495 | EGR position or actuator report code | Coolant loss without external leak |
| P1496 | Engine protection / EGR or BPV control report code | Coolant loss without external leak |
Truck, engine and year ranges from the reports.
| Truck model | Engine | Years | HP |
|---|---|---|---|
| XF 106 | MX-11 Euro 6 | 2013-2022 | 320-440 |
| CF 85 | MX-11 Euro 6 | 2013-2022 | 320-440 |
| XF | MX-11 Euro 6 | 2013-2022 | 320-440 |
| XF 106 | MX-13 Euro 6 | 2013-2023 | 410-530 |
Fitment is structured from user-provided reports and must be verified by VIN, installed connector and physical part markings before supply.
Questions about 2123995.
What are common failure symptoms for 2123995?
Common symptoms include Coolant loss without external leak; EGR commanded versus actual mismatch; DPF regeneration failure; Rough idle or stumble after hot restart. Exact symptoms vary by truck, software level and related faults.
Which fault codes are linked with 2123995?
Reported fault codes include P0404, P0487, P1489, P1490, P1494, P1495, P1496.
Can I order by OEM number 2123995 only?
Use the OEM number as a starting point, then confirm by VIN, engine type, installed connector and part photos because some reports contain duplicate or conflicting OEM references.
More egr valve lookups
MX-13 Euro 6 EGR valve
Power derate or limp mode · EGR valve stuck open or stuck closed in diagnostic software
MX-11 Euro 6 EGR valve
Power loss under load · Black smoke and EGR estimated rate too high
Earlier DAF EGR valve 1711516
Rough idle or stalling at low speed · Power loss and black smoke
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