AutoCodesRAM – B2188 RAM

B2188 RAM Code - Ignition Start Control Circuit Low

Quick Answer

The Totally Integrated Power Module (TIPM) monitors the Ignition Start Control Circuit. Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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
B2188 RAM indicates Ignition Start Control Circuit Low.
Common causes
Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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.
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Code Popularity 654
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 25, 2019
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Code B2188 RAM Description

The Totally Integrated Power Module (TIPM) monitors the Ignition Start Control Circuit. The Diagnostic Trouble Code (DTC) is set when the TIPM detects a short to ground condition in the Fused Ignition Switch Output (Start) circuit.
OBDII Code B2188 RAM - Ignition Start Control Circuit Low - AutoCodes.com
B2188 RAM Code - Ignition Start Control Circuit Low

What are the Possible Causes of the DTC B2188 RAM?

  • Faulty Ignition Switch
  • Ignition Switch harness is open or shorted
  • Ignition Switch circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)
  • Faulty Totally Integrated Power Module (TIPM)

How to Fix the DTC B2188 RAM?

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 B2188 RAM 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2188 RAM Code

1. What does the OBDII code B2188 on a RAM vehicle mean?

Code B2188 indicates a low voltage issue in the ignition start control circuit.

2. What are common symptoms of the B2188 code?

Symptoms include difficulty starting the vehicle, intermittent starting issues, or the engine not cranking at all.

3. What causes the B2188 code on a RAM vehicle?

Common causes include a faulty ignition switch, damaged wiring or connectors in the ignition circuit, or a weak battery.

4. Can a bad battery cause the B2188 code?

Yes, a weak or failing battery can result in low voltage to the ignition start control circuit, triggering the code.

5. How can I diagnose the B2188 code?

Start by checking the battery voltage, inspecting the wiring and connectors in the ignition circuit, and testing the ignition switch for proper functionality.

6. Is it safe to drive with the B2188 code?

Driving may not be possible if the vehicle has trouble starting, so it’s best to resolve the issue promptly.

7. How do I fix the B2188 code?

Repairs may involve replacing a faulty ignition switch, repairing damaged wiring, or ensuring the battery is fully charged or replaced if necessary.

8. Can a damaged ignition switch trigger the B2188 code?

Yes, a malfunctioning ignition switch can cause low voltage in the ignition start control circuit, leading to this code.

9. Does the B2188 code require professional repair?

While some issues like battery replacement can be done at home, complex wiring or ignition switch repairs may require a qualified technician.

10. How do I prevent the B2188 code from recurring?

Regularly inspect your vehicle’s electrical system, ensure the battery is in good condition, and address wiring issues promptly to avoid recurring problems.

Discuss the causes and fixes for B2188 RAM OBDII Code

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