EGR valve part number and disable discussion (2019 X80)

Tags: #egr · #part-number · #emissions

The EGR valve part number for the 2019 FAW X80 is 1207010-37K¹. It can be sourced from kitzap.ru². Multiple owners note the EGR valve contributes to emissions control, but some choose to disable it, citing perceived engine efficiency gains³⁴. (See also the related community caution elsewhere in this section that removing/disabling emissions hardware such as a catalytic converter is linked to increased detonation risk requiring higher-octane fuel — the same general caution likely applies to EGR modifications, though this was not explicitly confirmed for EGR in this batch.)⁵⁶

EGR valve function and performance tradeoff (restated). The EGR (exhaust gas recirculation) valve diverts exhaust gases back into the intake at low RPM to reduce emissions, at the cost of reduced engine power; it disengages at higher RPM. Some owners disable or modify the EGR for a perceived performance gain, though this increases emissions and can trigger the check-engine light⁷⁸.

P0405 — EGR sensor A low signal. Error code P0405 indicates a low signal from EGR sensor A. Typical symptom: check-engine light with no noticeable change in driving performance. Official dealer solution under warranty is sensor replacement; after warranty, some dealers simply disable the sensor since it doesn't affect engine operation. The code can recur after clearing if the underlying sensor issue persists⁹¹⁰¹¹.

EGR function and low-RPM emissions role (restated with numbers). The EGR valve redirects roughly 10% of exhaust gases back to the intake manifold at low RPM to reduce emissions, closing above roughly 3000 RPM. Some owners disable EGR to gain low-RPM power; mechanical disabling (spacer plate + deactivating electronic control) is possible but may trigger error codes requiring a programming fix^{121314151617181920}.

EGR sensor replacement fixes 100-110 km/h jerking and cold-start stumbling. EGR sensor failure symptoms: jerking/bucking specifically around 100-110 km/h when releasing the throttle; cold-start stumbling/misfire that smooths out after warmup; check-engine light. Replacing the EGR sensor resolves all of these symptoms. This is described as a common issue on higher-mileage used X80s²¹²²²³.

"Check engine management system" warning traced to a weak EGR signal. Dashboard warning "проверьте систему управления двигателем" (check engine management system) with the engine icon, confirmed via OBD2 as a weak EGR sensor signal. Troubleshooting steps: fully charge the battery, disconnect the battery terminals to reset, then read the code with an OBD2 scanner. If the warning persists, EGR sensor replacement is likely needed; the fault can be intermittent due to a loose electrical contact^2425262728.

EGR valve replacement (not just cleaning) resolves jerking and improves fuel consumption. Cleaning the EGR valve does not reliably help; owners report success ordering a replacement valve from China and installing it, which resolves jerking/hesitation (дергание) and reduces fuel consumption. Diagnostic test: disconnect the EGR connector and test-drive — if jerking stops, the valve is faulty. The valve can be replaced without draining the cooling system. With the connector disconnected, the check-engine light will illuminate (it can be reset with an OBD scanner), so the car remains drivable while waiting for the replacement part^{29303132333435363738}.

Disconnecting EGR — reported benefits. After disconnecting the EGR valve: check-engine light clears, engine roughness/knocking disappears, transmission shifts smoother, and overall engine response improves. The EGR valve is also reported to cause a clacking noise, especially during auto-start attempts (consistent with the aftermarket-alarm remote-start topic covered elsewhere in this section)^394041424344.

EGR error returns 2-3 days after valve replacement — connector/wiring diagnosis. A specific failure pattern: the EGR error appears, the valve is replaced, but the error returns 2-3 days later. Possible causes, in diagnostic order: (1) a defective replacement part — even OEM parts can fail early; (2) connector corrosion/moisture at the EGR electrical connector; (3) a wiring-harness circuit fault; (4) a possible ECU memory issue (unconfirmed — resetting the ECU after installing the new valve may help). First step: inspect the connector, clean the contacts, and check wiring continuity; if the error persists, check the fuse/relay in the underhood panel. EGR is treated as a consumable part on the X80, with a typical lifespan of 36,000-70,000 km^{45464748495051}.

OEM EGR valve — FAW part number and Avito sourcing. Original FAW Besturn X80 EGR valve part number: FAW 120701037K. Available through Far East vendors on Avito for roughly 7,500 RUB (RU market, Feb 2026), with about a 2-week delivery from Vladivostok. This is significantly cheaper than the local Kitszap markup, which quoted 18,000 RUB (RU market, Feb 2026) for a similar part — the same vendor comparison (Avito Far East versus Kitszap markup) was separately confirmed on an unrelated part (camera lens: 4,500 RUB via the Avito vendor versus 18,000 RUB at Kitszap), suggesting Kitszap pricing runs consistently high⁵¹⁵².

A second unsuccessful EGR replacement — error persists, root cause unclear. In a separate case, replacing the EGR valve did not clear the error code. This is consistent with the connector/wiring/ECU diagnostic path already documented on this card — suggests the root cause may be a sensor, wiring, or solenoid fault rather than the valve itself, especially when a straight valve swap doesn't resolve the code⁵³⁵⁴.

EGR fault symptoms — automatic transmission variant. On automatic-transmission cars, an EGR fault typically presents as: check-engine light, elevated idle RPM (4,000-6,000 RPM), and improper/delayed downshifting. Cleaning the EGR connector may resolve the issue without a full valve replacement — worth trying before assuming the valve itself has failed⁵⁵⁵⁶.

EGR fault symptoms — manual transmission variant. On manual-transmission cars, an EGR fault instead presents as loss of power and loss of Eco-mode availability (rather than the AT symptoms documented above). In one case, cleaning the EGR connector resolved the issue, confirmed by an official service center⁵⁷⁵⁸.

EGR valve location. The EGR valve sits beneath the intake-manifold hoses, with coolant/antifreeze supply lines attached directly to it — worth noting before attempting a DIY removal or cleaning, since coolant lines will need to be managed⁵⁹⁶⁰.

EGR blanking and intake-manifold sludge — a separate 140k-km case. One owner blanked off (plugged) the EGR port at the intake manifold rather than replacing the valve — no error code was triggered — and reports no change in fuel consumption or transmission behavior from doing so (their original jerking complaint had a different root cause, the missing-PCV-valve/crankcase-ventilation issue documented on the crankcase-ventilation card). By 140,000 km, the EGR system on this car had accumulated significant oil sludge, consistent with the low-mounted-intake-manifold design flaw described on that same card: the electronic-throttle pedal signal delay from the ECU is cited as a contributing factor to the jerking complex as a whole^6162636465.

EGR function restated — ~10% of exhaust at low RPM, MAP sensor sees the imbalance if blocked. The EGR valve operates only at low RPM (below roughly 1500-2000 RPM) to reduce cylinder temperature and improve combustion under light load; above that range it closes. Restating the mechanism in more detail: with EGR disabled or its outlet blocked, the MAP sensor detects an increased air volume (since less exhaust is being recirculated) while actual exhaust flow decreases — the ECU interprets this imbalance as a lean-fuel condition and adds fuel to compensate, which is why fully blocking crankcase/EGR outlets can raise fuel consumption. If exhaust flow falls below an expected threshold with EGR disabled (electronically or mechanically), an error code is triggered^{66676869707172}.

Charcoal (fuel-vapor) canister purge valve — one-way, cannot be blown through, do not bypass. Separately, and adjacent to the EGR/crankcase-ventilation troubleshooting on this card: the charcoal-canister purge valve (for fuel-vapor recovery, EVAP) is normally closed while the engine runs and opens only briefly under ECU command (audible click) to vent fuel vapors — it is a one-way check valve by design. Directly connecting the inlet/outlet hoses to bypass the valve causes an RPM drop; the valve cannot be blown through in either direction when working correctly (air blockage is normal, not a fault). One owner directly connecting these hoses did not wait long enough to hear the expected intermittent hiss/click of normal operation before concluding it was faulty. Do not modify or bypass this valve — it must remain in the circuit^73747576.

P0405 (EGR position sensor, low signal) and a replacement quote (Sep 2026). On an X80 with code P0405 (EGR = exhaust gas recirculation), the owner IBRAIM was quoted about 12,000 RUB (RU market, Sep 2026; written "12 к", currency assumed to be roubles) to replace the sensor ⁷⁷. Jürgen@73 advised cleaning it first, as it may simply be dirty ⁷⁸, and then checking all the tubes and hoses for a crack, an air leak or a vacuum leak ⁷⁹. The owner will try cleaning first but notes that many say the sensor is clean and the problem is elsewhere ⁸⁰. Replacement was not confirmed as the fix. The same owner later reported that catalytic converter and EGR fault codes were dealt with by ECU chip tuning (outcome not described) ⁸¹.

Clicking from the EGR valve after the engine is switched off is normal. After shutdown the ECU (engine control unit) runs an anti-carbon routine: it sends short electrical pulses to the valve's solenoid or stepper motor so the flap opens and closes several times, knocking soot off the seat before the engine cools and the deposits could jam the valve ⁸². The advice was still to read the fault codes as a precaution ⁸²; another owner said his clicking stopped on its own ⁸³.

Media

Screenshot of EGR error code displayed on dashboard

Related pages

• Valve cover gasket — part number
• EGR valve fouling, sensor issues, and disabling
• Drive belt part number — OEM vs. Mazda
• MAP sensor part number — cleaning fix
• VVT camshaft phaser — part number

Sources

This page is compiled from 83 community messages. Every fact carries a numbered reference to its original author and message.

Last updated: 2026-10-29