diff --git a/src/agents/pi-embedded-helpers.isbillingerrormessage.test.ts b/src/agents/pi-embedded-helpers.isbillingerrormessage.test.ts
index 141368bf366..fd78372f2e0 100644
--- a/src/agents/pi-embedded-helpers.isbillingerrormessage.test.ts
+++ b/src/agents/pi-embedded-helpers.isbillingerrormessage.test.ts
@@ -862,15 +862,16 @@ describe("classifyFailoverReason", () => {
   });
   it("classifies generic provider errors as timeout", () => {
     expect(classifyFailoverReason("An unknown error occurred")).toBe("timeout");
-    expect(classifyFailoverReason("An error occurred")).toBe("timeout");
     expect(classifyFailoverReason("Internal server error")).toBe("timeout");
     expect(classifyFailoverReason("Service unavailable")).toBe("timeout");
     // Case-insensitive
     expect(classifyFailoverReason("AN UNKNOWN ERROR OCCURRED")).toBe("timeout");
-    expect(classifyFailoverReason("an error occurred while processing")).toBe("timeout");
     // Wrapped in provider payload
     expect(classifyFailoverReason('{"error":{"message":"An unknown error occurred"}}')).toBe(
       "timeout",
     );
+    // "an error occurred" alone should NOT match (too broad)
+    expect(classifyFailoverReason("An error occurred")).toBeNull();
+    expect(classifyFailoverReason("A validation error occurred")).toBeNull();
   });
 });
diff --git a/src/agents/pi-embedded-helpers/errors.ts b/src/agents/pi-embedded-helpers/errors.ts
index 99adc32149f..1b737fd4775 100644
--- a/src/agents/pi-embedded-helpers/errors.ts
+++ b/src/agents/pi-embedded-helpers/errors.ts
@@ -853,7 +853,6 @@ function isGenericProviderError(raw: string): boolean {
   const lower = raw.toLowerCase();
   return (
     lower.includes("an unknown error occurred") ||
-    lower.includes("an error occurred") ||
     lower.includes("internal server error") ||
     lower.includes("service unavailable")
   );