Quick Answer
P067A means: The P067A code indicates a malfunction in the glow plug control circuit of a diesel engine.
Can I drive with P067A? It is advisable to address this issue as soon as possible to prevent starting problems.
Common Questions
What does P067A mean and how does it affect my car?
P067A indicates a problem with the glow plug control circuit in your diesel engine. This can lead to difficulties starting your vehicle, especially in cold weather, and may cause rough idling and increased emissions.
What are the most common causes of P067A and how much does it cost to fix?
The most common causes include faulty glow plugs, malfunctioning relays, and wiring issues, with repair costs ranging from $200 for glow plug replacement to over $1,200 for ECM issues.
Can I drive my car with P067A or should I stop immediately?
While you may still be able to drive your car, it’s recommended to address the P067A code as it can lead to severe starting issues, especially in colder temperatures.
How can I diagnose P067A myself using GeekOBD APP?
You can diagnose P067A using the GeekOBD APP by scanning for trouble codes, reviewing freeze frame data, and testing the glow plug circuit for faults.
What vehicles are most commonly affected by P067A?
P067A is commonly reported in diesel vehicles like the Ford Super Duty (2011-2016), Chevrolet Silverado 2500HD (2008-2013), and Dodge Ram 2500 (2007-2018).
How can I prevent P067A from happening again?
Regular maintenance, including electrical inspections and timely glow plug replacements, can help prevent the recurrence of the P067A code.
What is P067A?
The Diagnostic Trouble Code (DTC) P067A refers to a problem with the glow plug control circuit in diesel engines. This code is particularly prevalent in vehicles like the Ford Super Duty series (2011-2016), Chevrolet Silverado 2500HD (2008-2013), and Dodge Ram 2500 (2007-2018). When this code is triggered, it indicates that the Engine Control Module (ECM) has detected that the glow plug control circuit is underperforming or out of range. Glow plugs are essential for starting diesel engines, especially in cold weather, as they heat the air in the combustion chamber to facilitate ignition. If the glow plugs fail or the circuit malfunctions, the engine may struggle to start, resulting in a rough idle, increased emissions, and poor fuel efficiency. Ignoring this code can lead to more severe engine problems and might leave you stranded, especially in colder climates. Therefore, addressing the P067A code promptly is crucial for maintaining engine performance and reliability.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P067A is present:
- The check engine light illuminates and remains on, signaling a fault in the glow plug system.
- Engine hesitates to start, especially in cold weather, leading to frustration during morning starts.
- Fuel economy decreases significantly, with reports of a 10-15% drop due to improper combustion.
- Rough idling occurs, with the engine shaking or vibrating when it is running, indicating insufficient combustion.
- Increased exhaust smoke can be observed, especially white smoke during startup, suggesting unburned fuel.
Possible Causes
Most common causes of P067A (ordered by frequency):
- The most common cause is a faulty glow plug, accounting for approximately 60% of P067A occurrences. Replacement is often required.
- Another common issue is a malfunctioning glow plug relay or fuse, which can prevent adequate power from reaching the glow plugs.
- Wiring issues, such as damaged or corroded wiring in the glow plug circuit, may lead to poor electrical connections; regular inspections can help prevent this.
- Less frequently, the engine control module (ECM) itself may malfunction, requiring reprogramming or replacement.
- A rare but possible cause includes a fault in the fuel injection system, leading to improper fuel delivery and combustion.
P067A Repair Costs
Cost Breakdown by Repair Type
Glow Plug Replacement
Replacing faulty glow plugs is often the most direct solution for a P067A code.
- Total: $200 - $500
- Success rate: 85%
Wiring Repair
Repairing damaged wiring or connections in the glow plug circuit.
- Total: $150 - $300
- Success rate: 70%
ECM Reprogramming/Replacement
In rare cases, the engine control module may need to be reprogrammed or replaced.
- Total: $500 - $1,200
- Success rate: 60%
Money-Saving Tips for P067A
- 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 P067A Diagnosis Process
Follow these systematic steps to accurately diagnose P067A. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Perform an initial visual inspection to check for damaged wiring, loose connections, or corrosion, which typically takes about 5-10 minutes
Step 1: Perform an initial visual inspection to check for damaged wiring, loose connections, or corrosion, which typically takes about 5-10 minutes.
Step 2: Step 2: Use an OBD2 scanner, like the GeekOBD APP, to retrieve all codes and freeze frame data, helping you understand the context of the fault (10-15 minutes)
Step 2: Use an OBD2 scanner, like the GeekOBD APP, to retrieve all codes and freeze frame data, helping you understand the context of the fault (10-15 minutes).
Step 3: Step 3: Conduct component testing using a multimeter or specialized diagnostic tools to check the voltage and resistance of suspected glow plugs (20-30 minutes)
Step 3: Conduct component testing using a multimeter or specialized diagnostic tools to check the voltage and resistance of suspected glow plugs (20-30 minutes).
Step 4: Step 4: Test the glow plug relay and associated fuses to ensure they are functioning properly and verify the operation after any repairs (10-15 minutes)
Step 4: Test the glow plug relay and associated fuses to ensure they are functioning properly and verify the operation after any repairs (10-15 minutes).
Step 5: Step 5: After repairs, conduct a road test under various conditions to confirm that the issue has been resolved (15-20 minutes)
Step 5: After repairs, conduct a road test under various conditions to confirm that the issue has been resolved (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: Glow Plug Replacement in a 2013 Ford Super Duty
Vehicle: 2013 Ford Super Duty, 120,000 miles
Problem: Customer reported a hard start during winter months.
Diagnosis: Diagnostic scan revealed P067A; visual inspection indicated a faulty glow plug.
Solution: Replaced the defective glow plug and relay.
Cost: $350 (parts: $150 for glow plugs, $200 for labor)
Result: The vehicle started smoothly after the repair, with no further issues reported.
Case Study 2: Wiring Repair on a 2015 Chevrolet Silverado 2500HD
Vehicle: 2015 Chevrolet Silverado 2500HD, 85,000 miles
Problem: Check engine light on with poor starting performance.
Diagnosis: P067A was detected; further investigation revealed corroded wiring in the glow plug circuit.
Solution: Repaired the damaged wiring and replaced the glow plug relay.
Cost: $250 (parts: $50 for wiring, $200 for labor)
Result: Post-repair, the vehicle started reliably and no codes reappeared.