Engine cylinders # 1 and # 4 are misfiring
When the light comes on it's telling you to read the engine diagnostic codes.
How do I get engine codes for 1999 toyota corolla?
well..............what are the codes?
Trouble code P0172 means: System Too Rich (Bank 1)
P0153 02 Sensor Circuit Slow Response (Bank 2 Sensor 1) P0171 System too Lean (Bank 1 P0304 Cylinder 4 Misfire Detected P0401 Exhaust Gas Recirculation Flow Insufficient Detected
Since all cars after '96 have OBD 11 it takes a scanner to remove the trouble codes. Auto Zone will do it for free. it does have obdII but the codes will be erased by unhooking the battery.
Toyota engine code 402
Trouble code P0150 means:O2 sensor circuit malfunction (Bank 2 Sensor 1)
you need to take it to a repair shop and have it scanned for codes.
Go to----- http://www.extreme-check-engine-light-codes.com/Toyota%20OBD1%20Decoder.htm---- for this info
pepboys.