B0020:02 Code - Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Ground
Quick Answer
During a side or frontal crash of sufficient force the inflatable restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop in order to deploy an air bag or pretensioner. Common causes include Faulty Passenger Instrument Panel Air Bag, Passenger Instrument Panel Air Bag harness is open or shorted, Passenger Instrument Panel Air Bag circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B0020:02 indicates Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Ground.
- Common causes
- Common causes include Faulty Passenger Instrument Panel Air Bag, Passenger Instrument Panel Air Bag harness is open or shorted, Passenger Instrument Panel Air Bag circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B0020:02 Description
What are the Possible Causes of the DTC B0020:02?
- Faulty Passenger Instrument Panel Air Bag
- Passenger Instrument Panel Air Bag harness is open or shorted
- Passenger Instrument Panel Air Bag circuit poor electrical connection
- Faulty Sensing and Diagnostic Module (SDM)
How to Fix the DTC B0020:02?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
B0020:02 Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Ground
B0020:04 Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Open
B0020:0D Passenger Instrument Panel Air Bag Deployment Loop Stage 2 High Resistance
B0020:0E Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Low Resistance
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B0020:02 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
Frequently Asked Questions about B0020:02 Code
1. What does the OBDII code B0020:02 mean?
Code B0020:02 indicates a "Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Ground," meaning there’s an electrical short in the second stage of the airbag circuit for the passenger side.
2. What are the common symptoms of code B0020:02?
Symptoms may include an illuminated airbag warning light, the passenger airbag being disabled, and a stored fault code in the vehicle’s diagnostic system.
3. What causes the B0020:02 code to trigger?
Common causes include damaged wiring, a short to ground in the airbag circuit, a faulty airbag module, or loose or corroded electrical connectors.
4. Is it safe to drive with the B0020:02 code active?
It’s not safe, as the passenger airbag may not deploy correctly in an accident. Immediate diagnosis and repair are recommended.
5. How can I diagnose code B0020:02?
Use an OBDII scanner to confirm the code, visually inspect the airbag circuit wiring and connectors, and perform continuity tests to check for shorts to ground.
6. Can I reset the airbag light to clear the B0020:02 code?
Clearing the code without fixing the underlying issue is not recommended, as the problem will likely persist and could compromise safety.
7. What tools are needed to fix the B0020:02 code?
Basic tools include an OBDII scanner, a multimeter for electrical testing, and possibly wiring repair tools if damaged wires are found.
8. How much does it typically cost to repair code B0020:02?
Repair costs vary depending on the issue, but it could range from $50 for simple wiring fixes to $1,000 or more if the airbag module requires replacement.
9. Can a faulty passenger airbag module cause code B0020:02?
Yes, a defective airbag module can cause this code if it results in a short to ground within the deployment loop.
10. Should I attempt to repair the B0020:02 code issue myself?
Airbag systems are sensitive and safety-critical. If you’re not experienced with automotive electrical systems, it’s best to have a qualified technician handle the repair.
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