C2129 Chrysler Code - Battery Voltage Below Or Above Threshold
Quick Answer
The Battery Voltage to various control modules is monitored. Common causes include Battery Voltage, Charging system, Check for other OBDII codes. 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
- C2129 Chrysler indicates Battery Voltage Below Or Above Threshold.
- Common causes
- Common causes include Battery Voltage, Charging system, Check for other OBDII codes.
- 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 C2129 Chrysler Description
What are the Possible Causes of the DTC C2129 Chrysler?
- Battery Voltage
- Charging system
- Check for other OBDII codes.
How to Fix the DTC C2129 Chrysler?
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
C2129-16-BATTERY VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD [ AIR SUSPENSION CONTROL MODULE (ASCM) - ELECTRICAL DIAGNOSTICS: DTC TROUBLESHOOTING ]
C2129-16-BATTERY VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD [ DRIVETRAIN CONTROL MODULE (DTCM) - ELECTRICAL DIAGNOSTICS: DTC TROUBLESHOOTING ]
C2129-16-BATTERY VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD [ ELECTRONIC LIMITED SLIP DIFFERENTIAL (ELSD) MODULE - ELECTRICAL DIAGNOSTICS: DTC TROUBLESHOOTING ]
C2129-16-BATTERY VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD
C2129-17-BATTERY VOLTAGE - CIRCUIT VOLTAGE ABOVE THRESHOLD [ ACTIVE CRUISE CONTROL (ACC) MODULE - ELECTRICAL DIAGNOSTICS: DTC TROUBLESHOOTING ]
C2129-17-BATTERY VOLTAGE - CIRCUIT VOLTAGE ABOVE THRESHOLD [ AIR SUSPENSION CONTROL MODULE (ASCM) - ELECTRICAL DIAGNOSTICS: DTC TROUBLESHOOTING ]
C2129-17-BATTERY VOLTAGE - CIRCUIT VOLTAGE ABOVE THRESHOLD [ DRIVETRAIN CONTROL MODULE (DTCM) - ELECTRICAL DIAGNOSTICS: DTC TROUBLESHOOTING ]
C2129-17-BATTERY VOLTAGE - CIRCUIT VOLTAGE ABOVE THRESHOLD [ ELECTRONIC LIMITED SLIP DIFFERENTIAL (ELSD) MODULE - ELECTRICAL DIAGNOSTICS: DTC TROUBLESHOOTING ]
C2129-17-BATTERY VOLTAGE - CIRCUIT VOLTAGE ABOVE THRESHOLD
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C2129 Chrysler 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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Frequently Asked Questions about C2129 Chrysler Code
1. What does the OBDII code C2129 mean on a Chrysler vehicle?
It indicates that the battery voltage is either too low or too high, exceeding the acceptable threshold for the system.
2. What are common symptoms of code C2129 in a Chrysler?
Symptoms may include warning lights on the dashboard, difficulty starting the vehicle, and potential malfunction of electronic components.
3. What causes the C2129 code to appear?
Common causes include a failing alternator, a weak or overcharged battery, loose or corroded battery connections, or a faulty voltage regulator.
4. Can a bad battery trigger the C2129 code?
Yes, a weak or failing battery can cause voltage issues leading to this error code.
5. How do I diagnose the cause of the C2129 code?
Start by checking the battery voltage with a multimeter, inspecting the alternator output, and examining all battery cables and connections for corrosion or looseness.
6. Can I still drive my Chrysler with the C2129 code active?
It is not recommended, as voltage issues can lead to further damage to the electrical system or leave you stranded if the battery fails completely.
7. How do I fix the C2129 code on my Chrysler?
Repairs may include replacing the battery, repairing or replacing the alternator, cleaning or tightening battery connections, or addressing any wiring issues.
8. Can a faulty alternator cause the C2129 code?
Yes, a failing alternator that cannot maintain proper voltage levels can trigger this code.
9. How much does it cost to repair the C2129 code?
Costs vary depending on the issue; battery replacement may cost $100–$300, while alternator repair or replacement could range from $400–$1,000.
10. How can I prevent the C2129 code from returning?
Regularly inspect and maintain your vehicle's battery, alternator, and electrical connections to ensure proper voltage levels are maintained.
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