P2472

Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 4

Q: Is it safe to drive with P2472?

Short-term usually, but intermittent faults are easy to ignore and can still disrupt regeneration or exhaust protection. Track it down before it becomes a steady fault or a derate.

Q: Can I just clear P2472?

Clearing it may hide the problem briefly, but an intermittent wiring or sensor fault will set it again. Find the loose connection first.

Exhaust gas temperature (diesel emissions) Generic OBD-II Medium

What it means

P2472 sets when the bank 1, sensor 4 exhaust-gas-temperature (EGT) signal cuts out or jumps around instead of reading steadily. The computer uses exhaust heat to protect the catalyst and diesel particulate filter and to time regeneration. "Intermittent/erratic" almost always points to a loose connector or chafed wiring rather than an engine fault.

Medium

Can I keep driving? Usually driveable, but have it checked — an intermittent exhaust-temperature signal can interrupt DPF regeneration and occasionally trigger reduced power.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light that may come and go
Occasional reduced power or limp mode
DPF regeneration may be interrupted mid-cycle
Often no steady driving symptom

Common causes

Most likely first

Intermittent connection at the bank 1, sensor 4 EGT sensor connectorLikely
Chafed or loose wiring that flexes with heat and vibrationCommon
Failing EGT sensor with an unstable outputCommon
Corrosion or spread terminals at the connectorLess often

How to diagnose & fix

Work through it in order

Read freeze-frame data and locate the bank 1, sensor 4 EGT sensor.
Wiggle-test the wiring and connector while watching live temperature data for dropouts.
Inspect harness routing near exhaust heat for chafe or melt damage.
Clean or repair the connector and secure the harness.
Replace the sensor if the signal stays erratic, then clear and retest.

FAQ

Quick answers

Is it safe to drive with P2472?+

Short-term usually, but intermittent faults are easy to ignore and can still disrupt regeneration or exhaust protection. Track it down before it becomes a steady fault or a derate.

Can I just clear P2472?+

Clearing it may hide the problem briefly, but an intermittent wiring or sensor fault will set it again. Find the loose connection first.

Read & clear P2472 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX