Arduino toy car with 2 sensors. small code issue

Hello people! As part of my highschool science fair project I am running a simple RC car with an arduino. I am using a light sensor which can display in terms of voltage the light intensity and an ultrasonic sensor. My only problem is that my code doesn't work. Now, I tested the code individually, each separate segment for the code works. The car motor with a PWM works. The light sensor works, the sonar sensor works. However, when I put them all together in a single code, both the sensor work because I connected them to an LED to check, but the motor doesn't move. Could any of you please help me because it's my first time using arduino and I don't know if my code logic is good, I just used the samples and examples for reference.

int echo=9; //sonar sensor
int trig=8; //sonar sensor
int led=7;
int enb=2; //enables the motor 
int forward=10; // + on this side makes motor go forward
int back=11;

void setup()
{
  pinMode(echo, INPUT);
  pinMode(led, OUTPUT);
  Serial.begin (9600);
  pinMode(trig, OUTPUT);
  pinMode(enb, OUTPUT);
  pinMode(forward, OUTPUT);
  pinMode(back, OUTPUT);  
}

void loop()
{
   digitalWrite(enb, HIGH);
   digitalWrite(trig, LOW);  
   delayMicroseconds(2); 
   digitalWrite(trig, HIGH);
   delayMicroseconds(10); 
   digitalWrite(trig, LOW);
   int sensorVal=analogRead(A0);
   float voltage= sensorVal*(5.0/1023.0);
   int duration = pulseIn(echo, HIGH);
   int distance = (duration/2) / 29.1;
   
   if (distance <25 || voltage >3) // This is where the LED On/Off happens
   { 
     analogWrite(forward, 0);
     digitalWrite(led,HIGH); 
     delayMicroseconds(1000); 
     digitalWrite(led,LOW);
   }
   else
   {
    analogWrite(forward, 200);
    digitalWrite(back, LOW); 
   }
   
   if (distance >= 200 || distance <= 0)
   {
     Serial.println("Out of range");
     Serial.print("Color voltage =");
     Serial.print(voltage);
     Serial.println("V");
   }
   else 
   {
     Serial.print("Distance ahead ");
     Serial.print(distance);
     Serial.println(" cm");
     Serial.print("Color voltage =");
     Serial.print(voltage);
     Serial.println("V");
   }
   
    delay(1000);
}

Don't cross post!.

Mark

Sorry, had accidentally posted in the other section and then deleted there and changed to here.