Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 274 (ENGINE CONTROLS SELF-DIAGNOSTICS - 2.2L)SELF-DIAGNOSTIC SYSTEMON-BOARD DIAGNOSTICSMONITORS
2004 Oldsmobile Bravada AWD
On-Board Diagnostics: Monitors
2004 Oldsmobile Bravada AWDSECTION Monitors
WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- Comprehensive Component Monitor
Monitors PCM systems for opens, shorts, grounded and out-of-range sensors. Also monitors rationality of sensors. Rationality is whether the sensor's value is consistent with operating conditions of the other sensors. - Misfire Monitor
Monitors engine misfire using crankshaft sensor to determine location and severity of misfire. A catalyst damaging misfire will flash the MIL, and a non-catalyst damaging misfire is a normal type "B" code. - Fuel Trim Monitor
Monitors short and long term fuel trim for being at maximum lean or rich limit. - Oxygen Sensor Monitor
Monitors all oxygen sensors for maximum voltage level, minimum voltage level and lean rich/rich lean switching rate. - Oxygen Sensor Heater Monitor
Monitors oxygen sensor heater by watching sensor's time-to-activity after a cold start. - Catalyst Monitor
Monitors catalyst efficiency by comparing activity rate of pre-catalyst oxygen sensor and post-catalyst oxygen sensor. - EVAP Monitor
Monitors EVAP system for large leaks, small leaks and purge flow.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.