Error Code P1031 on Nissan Murano: Complete Diagnostic and Repair Guide

Error P1031 on Nissan Murano - one of those mysterious malfunctions that can baffle even experienced car owners. This code is associated with the engine management system and often appears unexpectedly: the car may begin to jerk at idle, lose power, or even go into limp mode. Unlike more common errors like P0300 (misfires), P1031 is specific to Nissan models with engines VQ35DE And VQ25DE, installed on Murano first and second generations (Z50/Z51).

The main problem with this error is its floating nature. Sometimes it appears and disappears on its own, creating the illusion of a false alarm. However, ignoring it is dangerous: in the long run P1031 may cause damage to the catalytic converter or even failure ECU (electronic control unit). In this article we will look at all possible reasons errors, from trivial (low-quality fuel) to serious (malfunction of phase sensors), and we will also give step by step instructions for diagnostics and repair - taking into account the specifics Nissan Murano different years of manufacture.

What does error code P1031 mean on Nissan Murano?

Code P1031 in the diagnostic system OBD-II stands for "Intake Valve Timing Control Solenoid Valve Circuit Bank 1" — a malfunction in the valve timing control valve circuit on the first cylinder block. In context Nissan Murano this usually indicates problems with:

• 🔧 VTC solenoid (Variable Valve Timing Control) - an electromagnetic valve that regulates the angle of rotation of the camshaft;
• ⚡ Electrical circuit solenoid (breaks, short circuit, oxidation of contacts);
• 📊 Mechanical components phase change systems (VTC gear wear, contamination of oil channels).

On Murano with engine VQ35DE (3.5 l) error P1031 often accompanied P0011 or P0021, which indicates a delay in the operation of the mechanism VTC on the intake or exhaust shaft. The peculiarity of this malfunction is its dependence on engine temperature: symptoms can only appear on a cold or, conversely, a warm engine.

⚠️ Attention: If the error P1031 appeared after changing the oil, there is a high probability that oil of the wrong viscosity was filled in (for example, 5W-30 instead of the recommended 5W-40). Solenoid VTC on Murano extremely sensitive to the quality of the lubricant!

The main symptoms of error P1031 on Nissan Murano

Error P1031 rarely manifests itself “alone” - it is usually accompanied by noticeable changes in the behavior of the car. Here are typical signs to look out for:

• 🚗 Unstable idle speed (float in the range of 500–1200 rpm);
• ⚡ Power dips during acceleration, especially at rpm 2000–3000;
• 🔥 Increased fuel consumption (10–15% higher than usual);
• 🔊 Extraneous sounds from under the hood (quiet metallic knocking or rustling sound when the engine is running).

On Nissan Murano Z51 (2007–2014) error P1031 often activates emergency mode (Limp Mode), at which the engine limits revolutions to 3000–3500. In this case, the dashboard lights up Check Engine, and the on-board computer may show additional codes, for example:

Error code	Description	Communication with P1031
P0011	Intake VTC delay	Direct - often appears with P1031
P0340	Camshaft position sensor malfunction	Indirect - can be a cause or an effect
P0171	Lean air-fuel mixture	Indirect - due to incorrect valve timing

Causes of error P1031: from simple to complex

Diagnostics P1031 on Nissan Murano requires a systematic approach, since there may be several reasons. Let's start with the most likely and easily eliminated:

1. Poor oil quality or non-compliance with specifications. Solenoid VTC on VQ35DE requires approved oil Nissan KE900-90042 (or analogues, for example, Mobil 1 5W-40). Using cheap or too thin oils leads to jamming of the mechanism.
2. Contamination of oil channels. Over time, deposits build up in the system and block the flow of oil to the solenoid. This is especially true for cars with mileage >150,000 km.
3. The VTC solenoid itself is faulty. The solenoid part of the valve may fail due to overheating or short circuit. Checked with a multimeter (resistance should be between 6–12 ohms).

More serious reasons:

• 🔧 VTC gear wear on the camshaft (requires engine disassembly);
• ⚡ Wiring problems or solenoid connector (oxidation, break);
• 📊 ECU firmware failure (rare, but occurs after unsuccessful chip tuning).

How to check the VTC solenoid without removing it?

Connect a diagnostic scanner (for example, Launch X431) and watch the parameter Intake Valve Timing Advance in real time. If the value does not change when the speed changes, the solenoid is faulty or blocked.

Step-by-step diagnosis of error P1031 on Nissan Murano

To pinpoint the cause P1031, follow this algorithm. Let's start with the simplest checks that you can do yourself:

Step 1: Check the oil and oil filter.

• 🛢️ Drain some oil into a clean container. If it is dark, has metal particles, or smells like burning, replacement is required.
• 🔍 Inspect the oil filter for contamination. On Murano it is recommended to use a filter Nissan 15208-9F600 or its analogues (Mann W712/92).

Step 2: VTC Solenoid Diagnosis.

1. Remove the connector from the solenoid (located on the valve cover, next to the intake camshaft).
2. Measure the resistance between the contacts: the norm is 6–12 Ohms. If it shows OL (break) or 0 ohm (short circuit), the solenoid must be replaced.
3. Apply 12 V to the solenoid from the battery - a click should be heard.

Step 3. Check the power circuit.

Using a multimeter, check:

• ⚡ Voltage at the solenoid connector when the ignition is on (should be 12 V).
• 🔌 Integrity of wires from ECU to the solenoid (ring for open).

How to fix P1031: from oil change to VTC repair

The method of repair depends on the identified cause. Let's consider solutions from the simplest to the major:

1. Oil change and system flushing

If the oil is old or out of specification:

• 🛢️ Drain the old oil and fill with new oil with approval Nissan (For example, Idemitsu Zepro Touring 5W-40).
• 🧹 Use flushing oil Liqui Moly Oil-Schlamm-Spulung for cleaning channels.
• 🔧 Replace the oil filter (required!).

2. Replacement of VTC solenoid

If the solenoid is faulty:

1. Purchase a new solenoid (original number - 13810-4M50A for VQ35DE).
2. Remove the old solenoid (you will need a 10mm wrench and a screwdriver).
3. Install a new one, having first cleaned the seat from dirt.
4. Clear errors with the scanner and follow the procedure VTC Learn (solenoid learning).

3. Repair or replacement of VTC gear

If the problem is mechanical:

• 🔧 Requires valve cover removal and gear inspection VTC on the camshaft.
• 🛠️ If the teeth are worn or play, the gear must be replaced (part number - 13028-4M500).
• ⚠️ It is recommended to carry out work at a service center, as precise installation of the gas distribution phases is required.

⚠️ Attention: On Nissan Murano Z52 (2015+) with system Direct Injection gear replacement VTC must be accompanied by a firmware update ECU to the latest version. Otherwise, conflicts in the operation of the phase change system are possible.

Prevention of error P1031: how to avoid recurrence

To make a mistake P1031 did not return after repair, follow these recommendations:

• 🛢️ Change oil every 7,000–8,000 km (despite the official limit of 15,000 km). Use only approved oils Nissan.
• ⚡ Check the voltage of the on-board network. A voltage drop below 11.5 V may cause the solenoid to malfunction. VTC.
• 🔧 Clean the throttle body regularly (every 30,000 km). A dirty damper increases the load on the phase change system.
• 📊 Avoid aggressive driving on a cold engine. Sharp acceleration before the oil warms up accelerates wear. VTC.

Frequently asked questions about error P1031 on Nissan Murano

Is it possible to drive with error code P1031?

Short term - yes, but not recommended. Driving for a long time with a faulty VTC leads to:

• Increased fuel consumption (up to +20%);
• Engine overheating due to improper valve timing;
• Damage to the catalyst (due to incomplete combustion of fuel).

If the error appears for the first time, you can go to a service center, but it is better not to load the engine (rpm up to 3000).

How much does it cost to repair a P1031 in service?

The cost depends on the reason:

• Oil change + flushing: 3 000–5 000 ₽;
• VTC solenoid replacement: 8,000–12,000 ₽ (with work);
• VTC gear repair: 25,000–40,000 ₽ (requires engine disassembly).

On Murano Z50 (2003–2007) repairs are cheaper than Z52 (2015+) due to design differences VTC.

Could P1031 be caused by bad gasoline?

Yes, but indirectly. Poor quality fuel leads to:

• Formation of carbon deposits on the valves, which makes operation difficult VTC;
• Detonation, which disrupts valve timing;
• Oil contamination by combustion products (accelerates solenoid wear).

If the error appears after refueling, try draining the gasoline and refilling with high-quality fuel (for example, Gazpromneft G-Drive 98).

How to reset error P1031 without a scanner?

On Nissan Murano can be reset Check Engine without scanner:

1. Turn off the ignition.
2. Open the hood and remove the “+” terminal from the battery for 10–15 minutes.
3. Reconnect the terminal and start the engine.

⚠️ Attention: This method will reset all ECU adaptations, including idle settings. After a reset, the engine may run erratically for the first 10–20 km.

Does the VTC solenoid from Nissan X-Trail fit on Murano?

Yes, but with reservations:

• Nissan X-Trail T31 (2007–2013) with engine VQ25DE has a compatible solenoid (13810-4M50A), but its performance may vary.
• On Murano Z52 (2015+) with system Direct Injection install solenoid from X-Trail not recommended - errors may occur P0011 or P0021.

It is better to use an original part or analogues from Hitachi (number SE339).