Quick Answer
U0162 means: U0162 indicates a communication failure between your vehicle's powertrain control module and body control module.
Can I drive with U0162? Immediate attention is recommended to prevent further electrical issues.
Common Questions
What does U0162 mean and how does it affect my car?
U0162 indicates a loss of communication between the powertrain control module and the body control module, which can disrupt several vehicle functions such as lighting, locking systems, and more. Ignoring this code could lead to further electrical issues and increase repair costs.
What are the most common causes of U0162 and how much does it cost to fix?
Common causes include damaged wiring (40% likelihood), faulty BCM (30%), and poor ground connections (20%). Repair costs vary, with wiring repairs costing between $100 - $300 and BCM replacement ranging from $400 - $800.
Can I drive my car with U0162 or should I stop immediately?
It is advisable to address U0162 immediately to prevent potential electrical malfunctions, including starting issues or failed systems like lighting. Driving may exacerbate the issue.
How can I diagnose U0162 myself using GeekOBD APP?
Using the GeekOBD APP, perform an OBD2 scan to retrieve the U0162 code along with any other related codes. Analyze the freeze frame data for symptoms and check the vehicle's history for any previous electrical issues.
What vehicles are most commonly affected by U0162?
U0162 is frequently seen in models like the 2013-2018 Ford F-150 and 2011-2019 Chrysler 300. Always check for any recalls or technical service bulletins (TSBs) related to electrical systems for these vehicles.
How can I prevent U0162 from happening again?
Regular maintenance checks on electrical systems, ensuring grounds are clean and secure, and inspecting wiring for wear can all help prevent the occurrence of U0162.
What is U0162?
The diagnostic trouble code (DTC) U0162 signifies a communication error between the vehicle's powertrain control module (PCM) and the body control module (BCM). This code is often seen in vehicles from manufacturers such as Ford and Chrysler, particularly in models like the Ford F-150 (2013-2018) and Chrysler 300 (2011-2019). When U0162 is triggered, it indicates that the PCM is unable to receive data from the BCM, which can affect various functions within the vehicle, including lighting, central locking, and even the vehicle's alarm system. This disconnect can arise from several issues, such as damaged wiring, corroded connectors, or a faulty BCM itself. The implications of this code can be serious, as it may lead to intermittent issues with the vehicle's electrical systems, potentially leaving you stranded. Understanding this code's meaning is crucial for diagnosing and rectifying the underlying problem effectively, ensuring your vehicle operates smoothly and safely.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U0162 is present:
- The check engine light may stay illuminated, alerting you to potential electrical issues within the vehicle.
- You might experience intermittent malfunctions in vehicle systems like power windows, locks, or lights, indicating a lack of communication.
- Fuel economy could decrease by 10-15% due to improper engine management stemming from BCM communication failure.
- The vehicle may fail to start altogether, as the BCM controls key functions necessary for ignition.
- Unexpected alarms or warning lights may activate, causing confusion and concern for the driver.
Possible Causes
Most common causes of U0162 (ordered by frequency):
- The most common cause is damaged wiring between the PCM and BCM, with a likelihood of about 40%. Inspections often reveal frayed wires or loose connections.
- Faulty or failing body control modules account for approximately 30% of U0162 cases. A BCM can fail due to manufacturing defects or exposure to moisture.
- Poor ground connections can lead to communication issues, with a 20% occurrence rate. Regular maintenance of electrical grounds can help prevent this.
- Less common but serious is a malfunctioning powertrain control module that may need replacement if it fails to communicate correctly.
- A rare cause includes software glitches in the BCM, which can be resolved with a system update from the dealership.
U0162 Repair Costs
Cost Breakdown by Repair Type
Wiring Repair
Repairing or replacing damaged wiring and connectors between the PCM and BCM.
- Total: $100 - $300
- Success rate: 85%
BCM Replacement
Replacing the body control module if it is deemed faulty.
- Total: $400 - $800
- Success rate: 90%
Money-Saving Tips for U0162
- Start with the most common and least expensive repairs first
- Use GeekOBD APP to confirm diagnosis before replacing expensive parts
- Consider preventive maintenance to avoid future occurrences
- Compare prices for OEM vs aftermarket parts based on your needs
- Address the issue promptly to prevent more expensive secondary damage
Diagnostic Steps
Professional U0162 Diagnosis Process
Follow these systematic steps to accurately diagnose U0162. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Conduct an initial visual inspection of the wiring harness and connectors for any damage or corrosion (5-10 minutes)
Step 1: Conduct an initial visual inspection of the wiring harness and connectors for any damage or corrosion (5-10 minutes).
Step 2: Step 2: Utilize the GeekOBD APP to perform an OBD2 scan, retrieving all fault codes and freeze frame data to gain context on the issue (10-15 minutes)
Step 2: Utilize the GeekOBD APP to perform an OBD2 scan, retrieving all fault codes and freeze frame data to gain context on the issue (10-15 minutes).
Step 3: Step 3: Test suspected components, such as the BCM and wiring, using a multimeter to check for continuity and proper voltage (20-30 minutes)
Step 3: Test suspected components, such as the BCM and wiring, using a multimeter to check for continuity and proper voltage (20-30 minutes).
Step 4: Step 4: After making repairs, conduct a system function test to ensure all systems work correctly and clear the codes (10-15 minutes)
Step 4: After making repairs, conduct a system function test to ensure all systems work correctly and clear the codes (10-15 minutes).
Step 5: Step 5: Perform a road test to verify that the repairs were successful under various driving conditions (15-20 minutes)
Step 5: Perform a road test to verify that the repairs were successful under various driving conditions (15-20 minutes).
Important Notes
- Always verify the repair with GeekOBD APP after completing diagnostic steps
- Clear codes and test drive to ensure the problem is resolved
- Address underlying causes to prevent code recurrence
Real Repair Case Studies
Case Study 1: 2015 Ford F-150 U0162 Diagnosis and Repair
Vehicle: 2015 Ford F-150, 65,000 miles
Problem: Customer reported intermittent issues with power locks and dashboard warning lights.
Diagnosis: Diagnostic scan revealed U0162 along with other codes. Visual inspection showed a damaged wire in the harness.
Solution: Repaired the damaged wiring and cleared the codes. Verified operation of locks and lights.
Cost: $220 (including parts and labor)
Result: Customer reported all systems functioning properly after repair.
Case Study 2: 2018 Chrysler 300 BCM Replacement
Vehicle: 2018 Chrysler 300, 30,000 miles
Problem: Vehicle failed to start intermittently; warning lights frequently triggered.
Diagnosis: U0162 was detected during scanning, indicating BCM communication loss. Further testing confirmed a faulty BCM.
Solution: Replaced the body control module with a new unit and reprogrammed it.
Cost: $650 (parts and labor included)
Result: Vehicle started without issues, and all electrical functions were restored.