- Engine / equipment
- 1.8 hybrid (2ZR-FXE): Prius III, Prius+ and Auris hybrid
- Period mentioned
- Approx. 2010–2015
- Symptoms
- Knocking or rattling on cold start, misfires (P0301–P0304), coolant loss and, eventually, a damaged head gasket.
- Possible cause described
- The EGR cooler and passages clog with soot; uneven gas distribution causes knock and misfires that end up damaging the head gasket. Toyota issued a technical bulletin (T-SB-0116-15) for the 2010–2015 Prius.
- Check for the garage
- Read the misfire codes, watch the coolant level and clean the EGR cooler, valve and manifold preventively; if coolant is lost with no visible leak, run a combustion-gas test.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
KNOWN FAULT · Toyota
Clogged EGR and head gasket on the 1.8 hybrid (2ZR-FXE)
Sources are not verified in real time and no entry confirms that your car is affected.
Has this happened to you?
Anonymous answer, no personal data.
Frequently asked questions
How much does it cost to repair this fault?
No verified estimate; ask the garage for a quote.
A rough figure from the original database, not an up-to-date quote.
Calculate estimateHow is it checked?
Read the misfire codes, watch the coolant level and clean the EGR cooler, valve and manifold preventively; if coolant is lost with no visible leak, run a combustion-gas test.
What are the symptoms?
Knocking or rattling on cold start, misfires (P0301–P0304), coolant loss and, eventually, a damaged head gasket.
Which cars and years does it affect?
- Brands
- Toyota
- Engine / equipment
- 1.8 hybrid (2ZR-FXE): Prius III, Prius+ and Auris hybrid
- Period mentioned
- Approx. 2010–2015
Taking it to a garage?
Models with this entry
- Toyota Auris (I)2006–2012
- Toyota Auris (II)2012–2018
- Toyota Prius (III)2009–2015
- Toyota Prius+2012–2021
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