P1640 Code - Output Driver Module 'A' Error Conditions
Quick Answer
With the engine running, brakes off, the Powertrain Control Module (PCM) receives an improper voltage level on the ODM 'A' fault line, condition met for 5 seconds. Common causes include Faulty Output Driver Module, Output Driver Module harness is open or shorted, Output Driver Module 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
- P1640 indicates Output Driver Module 'A' Error Conditions.
- Common causes
- Common causes include Faulty Output Driver Module, Output Driver Module harness is open or shorted, Output Driver Module 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 P1640 Description
What are the Possible Causes of the DTC P1640?
- Faulty Output Driver Module
- Output Driver Module harness is open or shorted
- Output Driver Module circuit poor electrical connection
How to Fix the DTC P1640?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1640 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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Information for Specific Makes
- P1640 Acura — Engine Control Module Internal Fault
- P1640 Audi — Engine Control Module Defective
- P1640 Buick — Output Driver Module 'A' Error Conditions
- P1640 Cadillac — Output Driver Module 'A' Error Conditions
- P1640 Chevrolet — Output Driver Module 'A' Error Conditions
- P1640 Ford — Powertrain DTCs Available in Another Module
- P1640 GMC — Output Driver Module 'A' Error Conditions
- P1640 Honda — Engine Control Module Internal Fault
- P1640 Hyundai — Main Relay Malfunction
- P1640 Isuzu — Engine Control Module Output Driver 1 Supply Voltage High
- P1640 KIA — Main Relay Malfunction
- P1640 Lincoln — Powertrain DTCs Available in Another Module
- P1640 Mercury — Powertrain DTCs Available in Another Module
- P1640 Oldsmobile — Output Driver Module 'A' Error Conditions
- P1640 Saab — Engine Control Relay No Voltage to ECM
- P1640 Volkswagen — Engine Control Module Defective
Frequently Asked Questions about P1640 Code
What does OBDII code P1640 mean?
Code P1640 indicates a malfunction in the Output Driver Module (ODM) 'A,' which manages signals sent to specific vehicle components like relays, solenoids, or actuators.
What are the common symptoms of code P1640?
Symptoms may include illuminated check engine light, erratic engine performance, stalling, or failure of specific components controlled by the Output Driver Module.
What causes code P1640?
Common causes include a faulty Output Driver Module, wiring issues such as shorts or open circuits, or problems with the connected components like relays or solenoids.
Can code P1640 affect drivability?
Yes, depending on which component is affected, it may cause drivability issues like stalling, rough idling, or failure of certain systems like cooling fans or fuel pumps.
How is code P1640 diagnosed?
A technician typically inspects the Output Driver Module, checks the wiring and connectors, and tests the components controlled by the module using a multimeter and diagnostic tools.
Can I fix code P1640 myself?
If you have experience with automotive electronics, you may be able to inspect wiring and connectors for damage. However, replacing the Output Driver Module or diagnosing deeper issues may require professional expertise.
How much does it cost to repair code P1640?
Repair costs vary but typically range from $150 to $500, depending on whether the issue involves wiring repairs, component replacements, or module replacement.
Is it safe to drive with code P1640?
Driving with this code may be unsafe, as it could lead to failure of critical systems like the fuel pump or cooling fan. It’s best to address it promptly.
What tools are needed to fix code P1640?
Tools may include a diagnostic scanner, multimeter, and basic automotive tools for inspecting wiring, connectors, and components.
Can a failing Output Driver Module cause other codes?
Yes, a faulty Output Driver Module can trigger additional codes related to the components it controls, such as solenoid or relay malfunction codes.
Discuss the causes and fixes for P1640 OBDII Code
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