U0797 Oldsmobile Alero OBD Code

OBD/2 U0797 error code description and symptoms.

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

Circuit High Input codes like U0797 are mostly caused by defective alternators that develop excessive voltages, although there may be other causes as well, such as short circuits that 'leak' current into a particular system from other, unrelated systems that work on higher voltages. Note that in the case of short circuits that leak power into a control circuit, there is likely to be other, seemingly unrelated trouble codes present along with the code(s) being investigated. Diagnosing a 'high input' code will always involve a thorough testing of the charging system as a first step, followed by measures to isolate the system from all other possible sources of power during resistance, continuity, and reference voltage tests.

U0797 Oldsmobile Alero Error Code Repair Process :

If your injector high sides shorted together check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system U0797 and engine control unit are in charge of monitoring a bunch of different injector high sides shorted together, and if they get a reading that's a little out of whack, up pops the check engine light.

Difficulty Level (Easy)

Repair Time (45 Min.)

Cost Prediction : $ 80-120

Common Causes of Oldsmobile Alero U0797 OBD2 Code

A common cause of code U0797 is the failure of Injector High Sides Shorted Together, but there are several other possible causes as well, such as ;

• Camshaft Position Sensor harness is open or shorted
• Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
• Exhaust tube
• Erratic camshaft position due to low oil pressure

U0797 is a kind of Network Trouble Code U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

U0797 code for other Oldsmobile cars

You can view according U0797 DTC for your car model. We selected several models to see obd2 solutions click and view it.

• U0797 Oldsmobile 442
• U0797 Oldsmobile 4-4-2
• U0797 Oldsmobile 66
• U0797 Oldsmobile 76
• U0797 Oldsmobile 88
• U0797 Oldsmobile 98
• U0797 Oldsmobile Achieva
• U0797 Oldsmobile Aerotech
• U0797 Oldsmobile Anthem
• U0797 Oldsmobile Aurora
• U0797 Oldsmobile Bravada
• U0797 Oldsmobile Curved Dash
• U0797 Oldsmobile Custom
• U0797 Oldsmobile Custom Cruiser
• U0797 Oldsmobile Cutlass
• U0797 Oldsmobile Delmont
• U0797 Oldsmobile Delta
• U0797 Oldsmobile Eight
• U0797 Oldsmobile Eighty-eight
• U0797 Oldsmobile F-85
• U0797 Oldsmobile Incas
• U0797 Oldsmobile Intrigue
• U0797 Oldsmobile Intrique
• U0797 Oldsmobile Jetfire
• U0797 Oldsmobile Lss
• U0797 Oldsmobile Ninety-eight
• U0797 Oldsmobile O4
• U0797 Oldsmobile Omega
• U0797 Oldsmobile Profile
• U0797 Oldsmobile Recon
• U0797 Oldsmobile Silhouette
• U0797 Oldsmobile Six
• U0797 Oldsmobile Ss
• U0797 Oldsmobile Starfire
• U0797 Oldsmobile Toronado
• U0797 Oldsmobile Trofeo
• U0797 Oldsmobile Vista Cruiser

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