Error P0016 on cars Skoda Octavia This is one of the most common problems faced by owners of the EA111 and EA888 engines. This code indicates a mismatch between the position of the crankshaft and the camshaft, which often leads to unstable operation of the motor, loss of power and even inability to start.
If you notice that the control lamp Check Engine If you catch fire, and when the scanner diagnoses the code P0016, you should not ignore this problem. Dissynchronization of gas distribution phases can lead to serious consequences, up to the meeting of valves with pistons on interference engines.
What is the P0016 error and how does it manifest?
Error code P0016 It stands for “timing system drive circuit: discrepancy between crankshaft and camshaft position (Bank 1, Sensor A)”. Electronic control unit ECU fixes that the data from the position sensors do not coincide with the reference values laid down in the firmware.
This fault is manifested quite clearly. The engine can start with difficulty, work at idle turns in jerks or stall immediately after start. In some cases, the machine loses power during acceleration, as the system changes the phases of gas distribution. AVS or CVVT cannot properly adjust the opening time of the valves.
Often owners Skoda Octavia A5 or A7 notice increased fuel consumption and the appearance of smoky exhaust. This is due to the fact that the optimal angle of ignition advance and injection phases are violated.
The main causes of desynchronization
The reasons for the P0016 error can be several, and they range from trivial sensor problems to serious mechanical malfunctions. The most common cause is stretching of the HRM chain or wear of the tensioner, which is characteristic of engines. 1.6 MPI and 1.4 TSI.
The second most popular reason is the failure of position sensors. A crankshaft position sensor or camshaft sensor may give incorrect signals due to contamination, wiring damage, or an internal defect.
It is also worth paying attention to the phaser (star camshaft). If his mechanism is jammed or he cannot hold the desired position under oil pressure, the error will appear regularly. Low quality motor oil also plays a role, as clogging of the channels leads to a drop in pressure.
- 1.6 MPI (CWVA/CWVB)
- 1.4 TSI (CZCA/CHPA)
- 1.8 TSI (CDAA/CZDA)
- 2.0 TDI (CFFB/CBBB)
Diagnostics and verification of sensors
Before you get into the engine and change the circuit, you need to exclude electronic causes. To do this, you should check the wiring of the sensors. Often Skoda Octavia because of vibration or overheating, the wires are rubbed, which leads to a break or short circuit.
The sensors themselves are checked using a multimeter. You need to measure the resistance and check the availability of power on the connector. If the wiring and sensors are all right, the problem is likely mechanical.
Pay attention to the state of the oil in the engine. Thick, dirty oil cannot provide a quick response of the phase regulator. Also check the oil filter – if it is clogged, the pressure will not be enough to operate the phase change system.
⚠️ Attention: Don’t try to just drop the error through the scanner without eliminating the cause. This is a temporary measure, and the P0016 error will return within a few dozen miles if the problem is mechanical.
Mechanical malfunctions of the HRM
If the diagnostics showed that the sensors and wiring are good, it is necessary to check the mechanical part. Chain stretching is a classic problem for engines 1.6 FSI and earlier versions 1.4 TSI. The chain is stretched, and the tags are shifted, which fixes the control unit.
The chain tensioner may be faulty: the spring has weakened or the valve has jammed. As a result, the chain sags, and at certain turns, a jump on one or more teeth occurs.
The phase regulator (star) may have wear inside the mechanism. He ceases to hold the angle of advance, and the camshaft "walks" relative to the crankshaft. In such cases, replacing one sensor will not help - you need to replace the asterisk or the entire mechanism of the timing system.
☑️ Checking HRM mechanics
Replacement and setup procedure
To fix the P0016 error, replacement of the timing system kit is often required. This is a time-consuming job that requires a special tool for fixing the shafts. On the engines. Skoda Octavia It is important to put the labels correctly.
After the chain and tensioner are replaced, adaptation must be performed. The control unit must "learn" new parameters of the engine. This is done through a diagnostic scanner in the “Channel Adaptation” or “Basic Settings” section.
Do not forget to replace the oil filter and pour quality oil that meets the tolerances. VW 504.00 / 507.00. Dirty oil after replacement of the timing system will quickly put new parts out of order.
What to do if the error does not disappear after replacement? | If the P0016 error persists after the chain replacement, check the error.
1. The correctness of the labels (may have confused the order). 2. The performance of the sensor position of the crankshaft (sometimes it has a backlash). 3. The condition of the pulley crankshaft (damper may slip). 4. Problems with wiring of the camshaft sensor (break inside the insulation).
Repair costs and prevention
The cost of repairs depends on the reason. Replacing sensors will be inexpensive, while replacing the timing system kit with a phase controller will require significant costs. For engines 1.4 TSI This is one of the most frequent procedures.
Average price for replacement of the timing system Skoda Octavia It varies depending on the region and service. Be sure to use original parts or quality analogues, as cheap chains stretch quickly.
Prevention is the timely replacement of oil (once in 7-10 thousand km) and the use of high-quality consumables. Watch for engine sounds: metal ringing at start-up is the first sign of tensioner problems.
| Component | Symptoms of failure | Average replacement cost (work + parts) |
|---|---|---|
| The sensor is clamped. | Error P0016, P0340, floating revolutions | 3,000 - 5,000 rub. |
| Crankshaft sensor | Failure to start the engine, error P0016 | 2,500 - 4,500 rubles. |
| Sets of timing system (chain, tensioner) | Launch sound, error P0016 | 15,000 - 25,000 rub. |
| Phasoregulator (star) | Power loss, error P0016, P0011 | 10,000 - 18,000 rubles. |
| Oil pump | Low pressure, delayed phase activation | 12,000 - 20,000 rubles. |
⚠️ Attention: On engines 1.4 TSI (CZCA/CHPA series) is often a problem with chain jumping by 2-3 teeth due to failure of the sedative. This requires immediate engine stoppage to avoid the valves meeting the pistons.
When replacing the timing chain on the 1.4 TSI engine, be sure to check the condition of the guide (sedative) chain. The plastic guide can crumble and parts of it fall into the oil pump, causing oil starvation.
The main reason for the P0016 error on the Skoda Octavia is not necessarily a broken sensor, but most often a stretched circuit or a faulty phase regulator that requires mechanical intervention.
Nuances of TSI and MPI engines
On engines 1.6 MPI (CWVA series) The P0016 problem is often associated with wear of the camshaft gear. The plastic insert inside the gear wears off and the shaft begins to "hang around," although the chain may be in perfect condition.
Engines 1.8 TSI and 2.0 TSI They are more demanding on the quality of the oil. If the pressure in the system drops, the phase regulator cannot hold the position, and an error occurs even with a working mechanism of the timing system.
For diesel versions 1.6 TDI and 2.0 TDI P0016 error often indicates system problems Common Rail or a camshaft position sensor, as it uses a belt that is less stretched, but can jump when cliffed or stretched.
⚠️ Attention: On cars with a mileage of more than 100,000 km, it is not recommended to replace only sensors in case of error P0016. This will save money, but it won’t solve the problem, as the wear and tear of the mechanical components is almost guaranteed.
Additional verification and adaptation
After the repair work, be sure to perform the procedure for adapting the gas determination phases through a diagnostic scanner. Without this, the error can come back even if the details are correct.
Enter the command 03-04 In diagnostic equipment to check the basic settings. Make sure that the advance angle values are within acceptable limits (usually ±2-3 degrees).
If you have done the repair yourself, check all the connectors for oxidation. Oxidized contacts can give false signals, which the control unit interprets as desynchronization.
Conclusion
Error P0016 on Skoda Octavia This is a sign of a serious problem in the gas distribution system. Ignoring this error can result in expensive engine repairs. Timely diagnosis and replacement of worn parts will help to avoid critical breakdowns.
Remember that on modern turbocharged engines, the requirements for the accuracy of the timing system are much higher. Use only proven parts and entrust complex work to qualified specialists.
Regular maintenance and oil quality control are the key to a long life of your car and the absence of errors in the engine management system.
Why does the P0016 error only appear on the hot one?
The hot metal expands, and if there is wear in the chain-star pair or backlash in the phaser, the gaps increase. The control unit notices this bias and issues an error. The cold gaps are smaller and the error may not appear.
Can I drive with a P0016 error?
Short term yes, but with caution. If the error is accompanied by loss of power or jerks, it is better to stop. On interference motors, the risk of valves meeting with pistons with a strong chain jump is very high.
How much does it cost to diagnose the P0016 error?
The cost of diagnosis varies from 1500 to 3000 rubles depending on the service. This price includes scanner connection, code reading and visual inspection.
Do I need to change both sensors (kneeshaft and camshaft) at once?
If only one sensor is faulty, you don’t need to change both. However, if the sensors have a large mileage, replacing them with a “pair” can be a preventive measure, as they fail at about the same time.