Electronic diagnostics

4 min read

JAGUAR XE 2.0D

Tracing and fixing faults in electronic engine management systems

Tasker & Lacy reveals the common problems that can arise on a 2017 Jaguar XE that’s powered by a 2.0-litre Ingenium diesel engine. Rob Hawkins reports...

Jaguar’s mid-sized rear-wheel-drive saloon is a popular model and its 1999cc twin-cam Ingenium diesel engine is found in a number of other vehicles including the F-PACE.

Independent Jaguar specialist, Tasker & Lacy of Leeds, has fixed numerous issues on these engines, so we asked them to reveal the common disasters that can arise. There’s quite a lot that can happen, although we can’t guarantee that all of these problems will arise on your XE.

Some of the issues we’ve highlighted require several checks to be conducted to resolve them, such as the failure of a NOx sensor that’s found attached to the exhaust system and accessed on the underside of the vehicle. In some cases, the NOx sensor won’t have failed.

The Ingenium diesel engine is known for having worn timing chains, which can have a knock-on effect with sensor and turbocharger failure, so if an engine’s chains sound noisy, it’s worthwhile having them checked and if necessary, renewed.

The XE shown here had a few problems that needed resolving. It was concluded that the NOx sensor had failed, but we also discovered the AdBlue injector was partially blocked with crystallised residue, which wouldn’t help, so this had to be cleaned along with fitting a new sensor.

1999cc 4-cylinder 16v turbodiesel

Typical Jaguar XE COMPONENTS

**1 The OBDII diagnostic socket is located underneath the driver’s side of the dashboard, inside the footwell. T&L uses the official JLR equipment to communicate with the vehicle’s electronics.**

2 To reduce the risk of a drop battery voltage, an external power source should be connected to the vehicle. Whilst the battery is inside the boot, there are suitable power connections in the engine bay.

3 The MAF sensor is in the nearside front corner of the engine bay, next to the air filter housing. T&L says that it’s reliable and rarely causes any problems.

**4 Amanifold absolute pressure (MAP) sensor is on the nearside of the engine bay, which is attached to the inlet manifold.**

5 The camshaft position sensor (CPS) is easy to see once the upper engine cover has been removed (it’s clipped into position and only needs prising off its mounts). The CPS should be renewed whenever the timing chains, tensioners and guides are replaced.

**6 The wiring and electrical connectors for the four injectors are routed across the top of the engine.**

This article is from...

Car Mechanics Magazine

16 December 2022

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