LATEST STATUS UPDATE as 2024-10-03:
Been a while, but issue finally seems to be resolved. As mentioned, Vauxhall wanted to help, but were unable to unless I could bring the car in with error showing (which would disappear after switching off the car) as then they could lodge a warranty claim.
Long story short, this is what they did on each visit when I took the car in when error came up.
1) They updated ECU firmware. This did not resolve the issue.
2) They swapped the dephazers around to see the the error would swap between the 2 banks. This did not resolve the issue.
3) They took the car for 4 weeks. They ultimately ended up replacing both (bank 1 and bank 2) dephaser hubs and sprockets on the crankshafts. 3 weeks has passed and error has not showed comen up again.
LATEST STATUS UPDATE as 2024-05-30:
Fault appeared again. As the issue is intermittent, Vauxhall have said they have nothing to diagnose or fix as without the fault being shown, they can't open a claim with Vauxhall under warranty. I am a bit annoyed about this as when I took the car in 3 weeks ago, the fault was showing but they didn't save the data.
So now Vauxhall have agreed that when the fault occurs again, I must bring the car in and they will immediately plug the car in, download the data, and send to Vauxhall technical.
More updates to follow soon...
LATEST STATUS UPDATE as 2024-05-07:
Vauxhall have investigated and the "camshaft phaser" were the issue, see post https://www.mokkaownersclub.co.uk/posts/109716/
========================================================
Hi All,
Mokka Ultimate (May 2023)
1.2 8 speed auto
1200 miles (yes, that low)
This morning the car jerked slightly as if the engine lost combustion/power for a split-second while accelerating out of a corner. Immediately the car beeped, showed "Engine Fault" and the engine light stayed yellow. The car may or may not have reduced drive power, but I don't really know as I didn't put the car under any strain after the fault appeared.
As I was almost at the train station, I decided to rather just park and go to work and see if the fault sort's itself out when I returned later. Alas, 8 hours later, upon starting the car the car beeped, showed "Engine Fault" and the engine light stayed yellow the instant I switched it on. Drove home without any issues or perceived power loss, again not pushing car though. When arriving home, plugged in my OBD-II device and the code shown was P005A - B Camshaft Profile Control Performance/Stuck Off Bank 1.
**
The P005A fault code refers to the B Camshaft Profile Control Performance or Stuck Off on Bank 1 of the engine. This code is typically found in vehicles equipped with variable valve timing systems. It indicates that there is an issue with the control or operation of the intake camshaft on bank 1.
The camshaft profile control system is responsible for adjusting the timing and lift of the intake valves, optimizing the engine's performance, and fuel efficiency. When this fault code appears, it means that there is a problem with the operation of the camshaft profile control system on bank 1.
What does trouble code P005A mean?
There are several potential causes for this fault code, including:
How to fix P005A?
To fix the P005A fault code on cars, you can follow these steps:
**
My questions I have are
As a side note, I checked the oil as in "Fix" point 2, all good there.
Thanks Everyone
Been a while, but issue finally seems to be resolved. As mentioned, Vauxhall wanted to help, but were unable to unless I could bring the car in with error showing (which would disappear after switching off the car) as then they could lodge a warranty claim.
Long story short, this is what they did on each visit when I took the car in when error came up.
1) They updated ECU firmware. This did not resolve the issue.
2) They swapped the dephazers around to see the the error would swap between the 2 banks. This did not resolve the issue.
3) They took the car for 4 weeks. They ultimately ended up replacing both (bank 1 and bank 2) dephaser hubs and sprockets on the crankshafts. 3 weeks has passed and error has not showed comen up again.
LATEST STATUS UPDATE as 2024-05-30:
Fault appeared again. As the issue is intermittent, Vauxhall have said they have nothing to diagnose or fix as without the fault being shown, they can't open a claim with Vauxhall under warranty. I am a bit annoyed about this as when I took the car in 3 weeks ago, the fault was showing but they didn't save the data.
So now Vauxhall have agreed that when the fault occurs again, I must bring the car in and they will immediately plug the car in, download the data, and send to Vauxhall technical.
More updates to follow soon...
LATEST STATUS UPDATE as 2024-05-07:
Vauxhall have investigated and the "camshaft phaser" were the issue, see post https://www.mokkaownersclub.co.uk/posts/109716/
========================================================
Hi All,
Mokka Ultimate (May 2023)
1.2 8 speed auto
1200 miles (yes, that low)
This morning the car jerked slightly as if the engine lost combustion/power for a split-second while accelerating out of a corner. Immediately the car beeped, showed "Engine Fault" and the engine light stayed yellow. The car may or may not have reduced drive power, but I don't really know as I didn't put the car under any strain after the fault appeared.
As I was almost at the train station, I decided to rather just park and go to work and see if the fault sort's itself out when I returned later. Alas, 8 hours later, upon starting the car the car beeped, showed "Engine Fault" and the engine light stayed yellow the instant I switched it on. Drove home without any issues or perceived power loss, again not pushing car though. When arriving home, plugged in my OBD-II device and the code shown was P005A - B Camshaft Profile Control Performance/Stuck Off Bank 1.
**
The P005A fault code refers to the B Camshaft Profile Control Performance or Stuck Off on Bank 1 of the engine. This code is typically found in vehicles equipped with variable valve timing systems. It indicates that there is an issue with the control or operation of the intake camshaft on bank 1.
The camshaft profile control system is responsible for adjusting the timing and lift of the intake valves, optimizing the engine's performance, and fuel efficiency. When this fault code appears, it means that there is a problem with the operation of the camshaft profile control system on bank 1.
What does trouble code P005A mean?
There are several potential causes for this fault code, including:
- Faulty camshaft position sensor: A malfunctioning sensor can provide incorrect information to the engine control unit (ECU), leading to improper intake camshaft control.
- Wiring or connection issues: Damaged or loose wiring, connectors, or terminals related to the camshaft position sensor can cause this fault code.
- Mechanical issues with the camshaft or timing components: Any mechanical problem that affects the operation of the intake camshaft, such as a worn or stuck camshaft phaser or timing chain, can trigger this fault code.
- ECU software or calibration issues: Occasionally, the fault may be due to a software glitch or programming error in the ECU, requiring an update or reflash.
How to fix P005A?
To fix the P005A fault code on cars, you can follow these steps:
- Start by inspecting the wiring and connectors related to the camshaft position sensor (CMP) and the variable valve timing (VVT) control solenoid for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
- Check the engine oil level and quality. Low or dirty oil can affect the performance of the camshaft profile control system. Change the oil if needed.
- Verify that the VVT control solenoid is functioning correctly. Use a scan tool or multimeter to test the solenoid's electrical signals and resistance. Replace the solenoid if it is faulty.
- Check the camshaft position sensor for proper operation. Test its electrical signals and resistance using a scan tool or multimeter. Replace the sensor if it is faulty.
- Perform a visual inspection of the camshaft, camshaft phaser, and timing chain for any signs of wear, damage, or blockages. Repair or replace components as necessary.
- Clear the fault code using an OBD-II scanner or by disconnecting the vehicle's battery for a few minutes. Drive the vehicle and monitor the system to see if the fault code returns.
- If the fault code persists, consider seeking assistance from a qualified mechanic or dealership. They may perform further diagnostic tests using specialized equipment to pinpoint the exact cause of the fault and recommend the appropriate repairs.
**
My questions I have are
- Anybody know the seriousness of the fault? (IE: stop driving immediately)
- Do you think I should clear the error and see if it crops up again?
- Don't clear the fault and go straight to Vauxhall?
- If I go to Vauxhall, would the cost to check and possibly repair be for my cost? (IE: What do I get covered for in the 3 year warranty?)
As a side note, I checked the oil as in "Fix" point 2, all good there.
Thanks Everyone
