P0443 on Chevrolet vehicles
EVAP Purge Valve Circuit Fault — what it means on a Chevrolet, whether it's safe to drive, and the fixes by model and year.
P0443 on a Chevrolet means evap purge valve circuit fault. Most vehicles stay drivable short-term, but diagnose it promptly. The most common cause is failed evap purge valve solenoid (open or shorted coil) (typically $80–$300). Pick your Chevrolet model below for its known failure patterns, recalls, and TSBs.
What does P0443 mean on a Chevrolet?
P0443 is an electrical code. The ECM drives the EVAP purge control solenoid and monitors that circuit; when the voltage or current it measures does not match what the commanded state should produce — an open coil, a short to ground, or a short to power — P0443 sets. It says nothing about whether vapor is actually flowing, which is what P0441 measures. P0443 means the circuit itself is not electrically healthy, so the test starts with a multimeter rather than a smoke machine.
P0443 is a standardized OBD-II code, so its definition is the same on every Chevrolet. What differs by model and engine is which cause is most likely — pick your Chevrolet model below for a diagnosis tuned to its known failure patterns, recalls, and TSBs.
Is it safe to drive a Chevrolet with P0443?
In most cases a Chevrolet stays drivable for short trips with P0443 active, but diagnose and repair it promptly. This is a low-severity code — ignoring it can lead to further damage or a failed emissions test. Exact tolerance depends on the model and engine.
What causes P0443 on a Chevrolet?
| Cause | Likelihood | Estimated repair (USD) |
|---|---|---|
| Failed EVAP purge valve solenoid (open or shorted coil) | Most common | $80–$300 |
| Damaged or corroded wiring / connector at the purge valve | Common | $50–$250 |
| Blown fuse feeding the purge solenoid circuit — Cheap to check and cheap to fix — do it before ordering a solenoid. | Occasional | $5–$30 |
| Aftermarket purge valve with a coil resistance outside the ECM's expected range | Occasional | $80–$300 |
| Failed PCM driver for the purge solenoid | Rare | $400–$1,500 |
Repair costs are typical US ranges and vary by Chevrolet model, model year, and labor rate. A diagnostic trouble code is a symptom, not a guaranteed failed part — confirm the root cause before replacing anything.
P0443 by Chevrolet model
Select your Chevrolet model and year for a P0443 diagnosis tuned to that vehicle's failure patterns, recalls, and TSBs.
Chevrolet Silverado 1500
1,648 NHTSA owner complaints · 14 recalls on record across the years covered below.
Chevrolet Equinox
1,100 NHTSA owner complaints · 8 recalls on record across the years covered below.
Chevrolet Tahoe
518 NHTSA owner complaints · 11 recalls on record across the years covered below.
Chevrolet Malibu
1,697 NHTSA owner complaints · 8 recalls on record across the years covered below.
Chevrolet Traverse
795 NHTSA owner complaints · 9 recalls on record across the years covered below.
Chevrolet Trax
117 NHTSA owner complaints · 3 recalls on record across the years covered below.
Complaint and recall counts are NHTSA totals for the model years covered on this site, not counts specific to P0443.
P0443 on other makes
Other codes on Chevrolet vehicles
P0443 on a Chevrolet: frequently asked questions
What does diagnostic trouble code P0443 mean on a Chevrolet?
P0443 is an electrical code. The ECM drives the EVAP purge control solenoid and monitors that circuit; when the voltage or current it measures does not match what the commanded state should produce — an open coil, a short to ground, or a short to power — P0443 sets. It says nothing about whether vapor is actually flowing, which is what P0441 measures. P0443 means the circuit itself is not electrically healthy, so the test starts with a multimeter rather than a smoke machine. P0443 is a standardized OBD-II code, so the definition is the same on every Chevrolet — which cause is most likely varies by model and engine.
What are the symptoms of P0443 on a Chevrolet?
Check Engine Light is illuminated. Often no drivability symptoms at all. Rough idle or stalling if the solenoid has failed in the open position. Hard start after refueling (solenoid failed open). EVAP readiness monitor will not complete. Vehicle will fail emissions / smog testing
What causes P0443 on a Chevrolet?
Failed EVAP purge valve solenoid (open or shorted coil) (most-common). Damaged or corroded wiring / connector at the purge valve (common). Blown fuse feeding the purge solenoid circuit (occasional). Aftermarket purge valve with a coil resistance outside the ECM's expected range (occasional). Failed PCM driver for the purge solenoid (rare)
Is it safe to drive a Chevrolet with P0443?
In most cases a Chevrolet stays drivable for short trips with P0443 active, but it should be diagnosed and repaired promptly — this is a low-severity code. Ignoring it can lead to further damage or a failed emissions test. Exact tolerance depends on the model and engine.