C1077 Chevrolet Aerovette OBD Code

OBD/2 C1077 error code description and symptoms.

HO2S Sensor Circuit Malfunction (HO2S-11) During testing the HO2S Heaters are checked for opens/shorts and excessive current draw.
The test fails when current draw exceeds a calibrated limit and/or an open or short is detected. Short to VPWR in harness or HO2S. Water in harness connector. Open VPWR circuit. Open GND circuit. Low battery voltage. Corrosion or poor mating terminals and wiring Damaged HO2S heater. Damaged PCM.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

C1077 Chevrolet Aerovette Error Code Repair Process :

The rule of C1077 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of speed vehicle signal circuit failure. Likewise, overriding the OBD C1077 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

Common Causes of Chevrolet Aerovette C1077 OBD2 Code

A common cause of code C1077 is the failure of Speed Vehicle Signal Circuit Failure, but there are several other possible causes as well, such as ;

Exhaust tube
Faulty Fuel injector
Incorrect Positive Crankcase Ventilation (PCV) hose connection
Three way catalyst converter Bank 1

C1077 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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C1077 Chevrolet Aerovette OBD Code

C1077 Chevrolet Aerovette Error Code Repair Process :

Common Causes of Chevrolet Aerovette C1077 OBD2 Code

C1077 code for other Chevrolet cars