What is P068B : Engine Error code Causes Explained
A defective relay, wiring, or battery might generate the P068B engine error code, which indicates a power supply issue to the engine control module. Detecting and fixing this issue improves vehicle performance and dependability.
How to Identify a DTCs Number
The Diagnostic Trouble Code (DTC) P068B refers to an issue with the Engine Control Module (ECM)/Powertrain Control Module (PCM) related to the relay de-energizing too late. You can identify the P068B error code by using an OBD-II scanner, which will read and display the trouble codes stored in your vehicle’s ECM.
Understand, this trouble codes (DTCs) are 5 characters: 1 letter, 4 numbers. P-Powertrain indicates the fault code’s location. Generic or manufacturer-specific codes are indicated by the first digit. The second digit denotes the subsystem (7=transmission). The last two numbers describe the issue.
If your check engine light is on and you suspect an issue, plugging in an OBD-II scanner will confirm if P068B is the code causing the problem.
Causes of P068B Error Code:
- Faulty PCM Power Relay:
The relay responsible for supplying power to the PCM might be defective. - Wiring Issues:
Corroded, frayed, or damaged wiring in the PCM relay circuit can trigger this code. - Weak or Failing Battery:
Low or unstable battery voltage can affect relay performance. - Bad PCM Ground Connection:
A poor ground can cause voltage fluctuations affecting the PCM. - Alternator Issues:
An over/undercharging alternator can cause voltage instability, affecting relay operation.
Risk Level of P068B Error Code:
A high-risk level for this code appears when the vehicle experiences frequent stalling, loss of power, or an inability to start, posing safety concerns.
Ignoring this code can lead to expensive repairs or even complete engine failure, so it’s best to diagnose and fix the issue as soon as possible.
Common Car Brands Affected by P068B Code:
The P068B engine error code is commonly found in the following list.
- Honda
- Ford
- GMC
- Dodge
- Volkswagen
- Chevrolet
- Chrysler
- Jeep
Video: P068B Engine Error code
FAQ’s
What is the P068B Engine Error Code?
P068B indicates an issue with the engine control module (ECM) power relay, specifically that it is shutting off too late. This can affect engine operation and performance.
What Causes the P068B Error Code?
Common causes include a faulty ECM power relay, wiring issues, a weak battery, alternator problems, or corrosion in the relay circuit.
What is the Risk Level of the P068B Code?
The risk level is high, as it can lead to engine stalling, starting issues, or even complete engine shutdown while driving, posing a safety hazard.
Which Vehicles Are Affected by P068B?
This error commonly affects Honda, Ford, GMC, Dodge, Volkswagen and other vehicles with electronically controlled engine management systems.