C2478 Jeep Cj5 OBD Code

OBD/2 C2478 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.

Gear changes are accomplished by a command from the TCM to energize the clutch actuator to release the clutch; after which various actuators inside the transmission disengage the current gear, and depending on current operating conditions, engage the next higher or lower gear ratio. All of this happens much faster than a human driver could change gears, and in most applications, gear changes are as smooth and seamless as on any fully automatic transmission.

C2478 Jeep Cj5 Error Code Repair Process :

The rule of C2478 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 intermediate speed sensor (iss) malfunction. Likewise, overriding the OBD C2478 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 Jeep Cj5 C2478 OBD2 Code

A common cause of code C2478 is the failure of Intermediate Speed Sensor (ISS) Malfunction, but there are several other possible causes as well, such as ;

Exhaust tube
Faulty Variable Camshaft Timing (VCT) position solenoid
Fuel injector leaks
Exhaust tube

C2478 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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C2478 Jeep Cj5 OBD Code

C2478 Jeep Cj5 Error Code Repair Process :

Common Causes of Jeep Cj5 C2478 OBD2 Code

C2478 code for other Jeep cars