P1611 Code - Key ID Discord IMM-ECM
Quick Answer
An immobilizer is an electronic device fitted to an automobile which prevents the engine from running unless the correct key is present. Common causes include Faulty or not programmed ignition key, Faulty IMMU, Faulty Engine Control Module (ECM). 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
- P1611 indicates Key ID Discord IMM-ECM.
- Common causes
- Common causes include Faulty or not programmed ignition key, Faulty IMMU, Faulty Engine Control Module (ECM).
- 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 P1611 Description
The microcircuit inside the key is activated by a small electromagnetic field which induces current to flow inside the key body, which in turn broadcasts a unique binary code which is read by the automobile's Engine Control Module (ECM). When the ECM determines that the coded key is both current and valid, the ECM activates the fuel-injection sequence.
The immobilizer function of the Infiniti Vehicle Immobilizer System (IVIS) or Nissan Anti-Theft System (NATS) consists of the following:
- NATS ignition key
- NATS antenna amp. located in the ignition key cylinder
- Body control module (BCM) or (IMMU)
- Engine Control Module (ECM)
- Security indicator lamp
What are the Possible Causes of the DTC P1611?
- Faulty or not programmed ignition key
- Faulty IMMU
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1611?
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 P1611 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
- P1611 Audi — MIL Request Signal Circuit Short To Ground
- P1611 Buick — Loss Of Continuous Variable Real Time Damping Serial Data Conditions
- P1611 Cadillac — Loss Of Continuous Variable Real Time Damping Serial Data Conditions
- P1611 Chevrolet — Loss Of Continuous Variable Real Time Damping Serial Data Conditions
- P1611 GMC — Loss Of Continuous Variable Real Time Damping Serial Data Conditions
- P1611 Hyundai — MIL Request Signal Circuit Low Voltage
- P1611 Infiniti — Key ID Discord IMM-ECM
- P1611 KIA — MIL Request Signal Circuit Low Voltage
- P1611 Nissan — Key ID Discord IMM-ECM
- P1611 Saab — Engine Control Module Defective
- P1611 Volkswagen — MIL Request Signal Circuit Short To Ground
Frequently Asked Questions about P1611 Code
1. What are the common symptoms of OBDII code P1611 (Key ID Discord IMM-ECM)?
- Common symptoms may include difficulty starting the vehicle, engine stalling, or the inability to start the engine altogether.
2. What are the possible causes of OBDII code P1611?
- The code P1611 can be triggered by issues with the engine immobilizer system, such as a faulty key transponder, a mismatched key, or a problem with the ECM (Engine Control Module).
3. How can I diagnose the OBDII code P1611?
- Diagnosis typically involves using a scan tool to retrieve the code, checking the key and immobilizer system for proper functioning, and inspecting the ECM for any signs of damage or malfunction.
4. Can a DIYer repair OBDII code P1611 at home?
- Depending on the specific cause, DIY repairs may include reprogramming the key, replacing the key transponder, or resetting the ECM. However, more complex issues may require professional diagnosis and repair.
5. How important is it to address OBDII code P1611 promptly?
- It is important to address code P1611 promptly as it can lead to potential issues with starting and running the vehicle. Ignoring the code may result in the vehicle becoming inoperable.
6. Can a faulty key fob cause OBDII code P1611 to appear?
- Yes, a faulty key fob or key transponder can trigger code P1611 if it is not properly communicating with the immobilizer system or ECM.
7. Will disconnecting the battery reset OBDII code P1611?
- Disconnecting the battery may temporarily clear the code, but it will likely reappear if the underlying issue with the key ID discord between the immobilizer and ECM is not resolved.
8. Is it safe to continue driving with OBDII code P1611 present?
- It is not recommended to continue driving with code P1611 present, as it can lead to unexpected stalling or starting issues while on the road, potentially compromising safety.
9. How much does it typically cost to repair OBDII code P1611?
- The cost of repairing code P1611 can vary depending on the root cause of the issue. Simple repairs like reprogramming a key may be relatively inexpensive, while more complex ECM replacements can be costly.
10. Can a locksmith help with resolving OBDII code P1611 related to key issues?
- Yes, a locksmith specializing in automotive key and immobilizer systems may be able to assist with resolving key-related issues triggering code P1611.
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